Reefs are formed by calcium carbonate produced by the coral polyps. As a single polyp dies, its soft tissue decays, but the calcium carbonate cup remains.Other polyps build on top of the cup, and when they die, other polyps will build on their cups. Over time, this process creates larger and larger coral reefs.While corals are the chief architects of the reef structure, they are not the only builders. Corallin algae cement various corals together with compounds of calcium, and other organisms such as tube worms andmollusks donate their hard skeletons to the construction.
Some of the interactions that occurs during reef building is called mutualism.
What is reef building?The reef building can be defined as the activities of the organism called coral polyps which involves the secretion of layers of calcium carbonate.
There are many different species interactions that occur during reef building.
One example is mutualism, where two species benefit each other.
For example, the zooxanthellae, a type of algae, provides food to the coral polyps through photosynthesis. In return, the coral provides a protected environment and carbon dioxide for photosynthesis.
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If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, what is the result of this union?
Answer:
We know the gametes contain n number of chromosomes and the union of two gametes egg and sperm result in the formation of zygote which contains 2n chromosomes.
Given the situation, If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, it will result in the formation of a zygote containing (2n + 1) chromosomes, a condition that is known as Trisomic.
Trisomic condition can be of different types like:
Full Trisomy: in which an entire extra chromosome is present.Partial trisomy: In which only a small part of extra chromosome is present.Secondary trisomy: In which quadruplicated arms of an extra chromosome are present.Tertiary trisomy: In which extra chromosome contains copies of arms from two other chromosomes.Trisomy is basically a chromosomal aberration condition and if it happens in a human it can cause serious birth defects in children for example: Down syndrome. Here are few diseases that can be caused due to Trisomic conditions of child:
Trisomy due to addition chromosome 21 (Down syndrome) Trisomy due to addition chromosome 18 (Edwards syndrome) Trisomydue to addition chromosome 13 (Patau syndrome)Hope it help!
Answer:
All future somatic cells of the organism will contain the (2n + 1) number of chromosomes.
Match the area with the correct climate:
1. Savanna/ hot and wet all year long
2. Steppes/ a type of rain forest vegetation
3. Monsoon/ moist wind from the ocean
4. Permafrost/ grasslands near equator
5. Alpine/ moist continental
6. Desert/ dry summers and cool wet winters
7. Deciduous Forest, hot, dry, sparse vegetation
8. Tundra/ semiarid, grass and scattered trees
9. Jungle/ climate changes with altitude
10. Tropical Rain Fores/ cold, high latitudes
11. Mediterranean/ frozen ground
Savanna: Grasslands near the equator.
Steppe: Semiarid, grass and scattered trees.
Monsoon: Moist wind from the ocean.
Permafrost: Frozen ground.
Alpine: Climate changes with altitude.
Desert: Hot, dry, sparse vegetation.
Deciduous forest: Moist continental.
Tundra: Cold, high latitudes.
Jungle: A type of rainforest vegetation.
Tropical Rain Forest: Hot and wet all year long.
Mediterranean: Dry summers and cool wet winters.
Hope this helped!
The various climates of the world are associated with particular geographical areas. Near the equator, savannas flourish because of the hot temperatures and regular rains they experience. Steppes are regions with little precipitation and are semi-arid landscapes with sporadic trees. The climate in particular locations is impacted by the monsoons, which bring moist breezes from the ocean. Permanently frozen ground is referred to as perma frost and can be found in cold, high latitudes. Alpine climates have different temperature patterns depending on altitude. While deciduous forests endure a moist continental climate, deserts have dry weather with scant vegetation. Tundras are common in colder climates and are distinguished by frozen ground. Tropical rainforests are hot and humid, while jungles have rainforest vegetation. Summers are dry and winters are chilly and rainy in Mediterranean climates.
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Forests in Michigan, as well as forests throughout the states, are under increasing development pressure. Parcelization is the division of ownership into smaller and smaller parcels. Fragmentation is when the forest canopy is dissected for houses, lawns, driveways, and other infrastructure. Together, parcelization and fragmentation have impacts on forest ecology and forest biodiversity. ALL BUT ONE what would be a reasonable plan to stop both.
A) Create corridors of trees along fencerows or streams as natural pathways for wildlife connecting forest fragments.
B) Put your land in a conservation easement to insure that it won’t be fragmented in the future.
C) Reforest gaps between nearby blocks of forest and fill in odd areas to make larger blocks.
D) Use carefully controlled burns as a management tool to maintain plant communities.
The Easter Lillie's bring warm air from the Atlantic Ocean to Western Europe. This creates a fairly mild, wet climate
The European Union has positively affected the economies of Europe byA) refusing to allow countries to trade with each other. B) allowing England to become the richest European country. C) lowering or eliminating barriers that slow down trade between countries. D) making taxes on imported goods higher and promoting economic independence.
lowering or eliminating barriers that slow down trade between countries
Which of the following is NOT an auto-immune disease?
A.) Lupus
B.) Rheumatoid arthritis
C.) Type-1 Diabetes
D.) Down’s syndrome
Down syndrome is the answer.
Take a look at the other diseases to know why.
Lupus: a chronic autoimmune disease where the person's immune system is over active and begins to affect/damage healthy tissue. It can affect tissues all over the body.
Rheumatoid Arthritis: is also an autoimmune disease, not to be mistaken with osteoarthritis (wear and tear). It occurs when the person's immune system attacks the lining of the joints, resulting in swelling and eventually joint deformity.
Type-1 Diabetes: is also an autoimmune disease. It's when the body's immune system attacks and destroys beta-cells in the pancreas. These cells produce insulin, so destroying them results in diabetes.
Down's Syndrome: Although people with down's syndrome often have autoimmune disorders, down's syndrome is a birth defect caused by a chromosome irregularity (trisomy 21). It is not an autoimmune disorder.
Among Lupus, Rheumatoid arthritis, Type-1 Diabetes, and Down’s syndrome, the one that is NOT an auto-immune disease is Down’s syndrome. Auto-immune diseases are ones where the body's immune system attacks its own cells, unlike Down’s syndrome which is a genetic condition.
Explanation:The question asks which of the listed conditions is not an auto-immune disease. Auto-immune diseases are conditions where the immune system mistakenly attacks the body's cells. This includes diseases such as Lupus, Rheumatoid arthritis, and Type-1 Diabetes. However, Down’s syndrome is not an auto-immune disease; it's a genetic condition that results when there is an extra chromosome 21.
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Zachary's student loans are an example of what type of loan? secured loan unsecured loan mortgage loan auto loan
The right option is; unsecured loan
Zachary's student loans are an example of unsecured loan.
An unsecured loan is a type of loan that is given and supported only by the borrower’s reliability without being protected by any collateral. If an individual is unable to pay the loan, the lender cannot take his or her property. Types of unsecured loan include student loans, credit cards and personal loans.
In financial accounting, Zachary's student loans are an example of an: B. unsecured loan.
What is a loan?A loan can be defined as an amount of money that is typically being borrowed by a borrower from a bank or other financial institutions (lender), and it is generally expected to be paid back by a borrower to the lender at a specific period of time with an agreed interest.
Generally, there are different types of loans and these include the following:
Mortgage loanSecured loanAuto loanCredit-builder LoanUnsecured loanIn this scenario, Zachary's student loans are an example of an unsecured loan because they do not require a collateral and it has a higher risk.
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The rock pictured here has a vesicular texture. It is sometimes called scoria. What type of rock is this and where did it form? A) an igneous rock, deep in the Earth B) a sedimentary rock, in a stream bed C) a metamorphic, rock deep in the Earth D) an igneous rock, at or near the Earth’s surface
Answer:
Option (D)
Explanation:
Scoria is an igneous rock that is dark in color. When volcanic eruptions take place, the magma comes out to the surface forming lavas and releasing various gases. These lavas due to their reducing temperature start to get solidified. During this process, the air bubbles trapping these dissolved gases get solidified and forms a rock which is commonly known as scoria. They are easily marked by their vesicular structure. They are formed at or near the surface of the earth and they are comprised of basaltic rock types.
Thus, the correct answer is option (D).
There are various types of rocks. Scoria is a type of igneous rock that forms at or near the Earth's surface when volcanic lava cools rapidly while gas is still trapped inside, resulting in a vesicular or spongy appearance.
Explanation:The rock that you refer to, which is sometimes called scoria and has a vesicular texture, is an igneous rock. It forms at or near the Earth’s surface when lava ejected from a volcano solidifies rapidly with gas still trapped inside, which gives it the vesicular or spongy appearance. Therefore, the correct choice is D) an igneous rock, at or near the Earth's surface.
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Which of the following is an example of a biotic factor?
The salinity level in a salt marsh
The temperature of water at the seafloor
The shrimp population in a bay
The amount of sunlight reaching a seagrass bed
Answer:
The shrimp population in a bay
Explanation:
Biotic factors are the living component of an ecosystem. These include the plants and animals that inhabit the area. The rest of the choices are the abiotic factors which describe the non-living component of an ecosystem. Abiotic and biotic factors are interrelated and together help to form an ecosystem and biome.
Answer:
shrimp population (C)
Explanation:
Raynaud's disease results in brief periods of vasospasms. This disease affects blood supply to fingers and toes. It is also known to affect blood flow to lips, ears, nose and nipples. During what is called as "Raynaud's attacks", the skin may turn white and then blue for a short time. Which of these best describes why these symptoms occur? A) It results in a narrowing of the veins which slows blood flow. B) It results in a narrowing of the arteries which slows blood flow. C) It results in a widening of the veins which increases blood flow. D) It results in a widening of the arteries which increases blood flow.
1. Identify some of the pros and cons of genetically modified organisms and products made from them (need 2 pros and 2 cons)
2. Argue an opinion about whether genetically modified organisms (or any genetic engineering techniques) should be used to solve human problems
1.GMO's have both pros and cons.
Pros like 1) GM crops have more nutrients, are resistant to pesticides and grow quickly. 2) Artificially bringing change by manipulating the DNA will save many years of research as observed with traditional breeding methods.
Cons like 1) Some cases of health risk like liver and kidney problem has been observed with the use of GM crops. GMOs can also affect those with allergies. Enough research is not done on health effects. 2) Higher levels of toxins could be produced with the insertion of a foreign plant gene.
2. According to my opinion, GMOs should be used to solve human problems but it should be brought after proper research being done. The most important role of GM crops is to ensure that there is enough to eat. Since the global population is expected to reach more than nine billion by 2050, there will be increasing demand for food. Although agricultural productivity has improved drastically, production might not be sufficient to meet demand unless we start using significantly more land, fertilizer, and water. Further the change in climate will make the situation worse. So under such conditions if we can use GM crops which are more tolerant to such harsh conditions and use less fertilizers then it's a boon definitely.
Answer:
Pros as 1) GM crops have more proteins and stuff, are resistant to pesticides and grow quickly. 2) Artificially bringing a change by manipulating the DNA will save many years of research as observed with traditional breeding methods. Cons as 1) Some cases of health risk like liver and kidney problem has been observed with the use of GM crops. GMOs can also affect those with allergies. Enough research is not done on health effects. 2) Higher levels of toxins could be produced with the insertion of a foreign plant gene.
Is it ethical to genetically modify an organism?
According to my opinion, GMOs should be used to solve human problems but it should be brought after research being done. The most important stuff of GM crops is to make sure that there is enough to eat. Since the population is expected to reach more than nine billion by 2050, There will have to be more food for more people.
Explanation:
Which of these characteristics affects the diffusion oxygen into the icefish's blood? which of these characteristics affects the diffusion oxygen into the icefish's blood? icefish have clear, thin blood. icefish have transparent, scale-less skin. icefish gills are white. icefish hearts are colorless?
The theory of plate tectonics came from the idea of continental drift, which was proposed in the early 20th Century by A) Max Planck. B) Gottlob Frege. C) Alfred Wegener. D) Werner Heisenberg.Which geological features MOST LIKELY prompted the development of the theory of plate tectonics?
A) river deltas
B) glacier fields
C) mountain ranges
D) tropical rainforests
35)
All BUT ONE statement provides evidence supporting plate tectonics, through data collected at the sites of sea floor spreading. That is
A) paleomagnetic reversals in specific areas of the sea floor.
B) a large occurrence of earthquakes along specific lines within the Earth's oceans.
C) the presence of unique species in remote locations, such as Australia and New Zealand.
D) an increase in the thickness of ocean crust as you move away from the area of spreading.
36)
The origins of the theory of plate tectonics began when German scientist, Alfred Wegener, proposed the idea of
A) superposition.
B) continental drift.
C) natural selection.
D) paleomagnetic reversals.
37)
In the early 1900s German geophysicist Alfred Wegener began to question how the structures on the Earth formed over time. He proposed the Theory of Continental Drift to suggest that all continents were once connected and have "drifted" to their current location over time.
What was the main reason that Wegener's theory received a lot of ridicule from the scientific community?
A) No similar fossils were found on different continents.
B) There was no data to suggest any change in geologic structures.
C) Wegener did not give a method on how the continents actually moved.
D) The outlines of the continents looked like puzzle pieces that would fit together.
38)
Mars rotates by 360 degrees on its axis in 24 hours and 39 minutes. Which of these is equivalent to 24 hours and 39 minutes on Mars?
A) A day
B) A year
C) A week
D) A month
1. C
2. A (i think)
3. D
4.B
5. D
6.A (i think)
Final answer:
Alfred Wegener's continental drift hypothesis led to the theory of plate tectonics, which suggested a past supercontinent named Pangaea. Mountain ranges most likely prompted the theory, and Wegener faced ridicule because he lacked a mechanism for continental movement. A Martian day, or sol, is equivalent to 24 hours and 39 minutes.
Explanation:
The theory of plate tectonics originated from Alfred Wegener's idea of continental drift, which he proposed in the early 20th Century. Wegener's hypothesis was based on several key observations including the jigsaw-puzzle fit of the continents, similar fossils found across oceans, matching mountain ranges in separate continents, and paleoclimate evidence suggesting the joining of continents. His concept of a supercontinent Pangaea, which existed around 200 million years ago, was initially rejected because he could not explain how the continents moved. It wasn't until the 1960s, with the discovery of seafloor spreading, that continental drift and plate tectonics were widely accepted, revolutionizing our understanding of Earth's geology.
The geological features that most likely prompted the development of the theory of plate tectonics are mountain ranges (C), because they provide visible evidence of the immense forces and the movement of the Earth's crust involved in the theory.
The correct evidence supporting plate tectonics through data collected at the sites of sea floor spreading is: A) paleomagnetic reversals in specific areas of the sea floor, B) a large occurrence of earthquakes along specific lines within the Earth's oceans, and D) an increase in the thickness of ocean crust as you move away from the area of spreading. The option that does not support this is C) the presence of unique species in remote locations, such as Australia and New Zealand.
One of the main reasons Wegener's theory of continental drift received ridicule from the scientific community (C) was that he did not provide a mechanism on how the continents actually moved.
A Mars day, which is equivalent to 24 hours and 39 minutes, is known as a sol (A).
For eye color, the brown allele is dominant over the blue allele. If two parents are heterozygous for eye color, what percentage of their offspring would be expected to have blue eyes?
Hint: Use a Punnett Square
So, since the trait is eye color, let's use E to represent the dominant allele (brown) and e to represent the recessive allele (blue).
I've attached a Punnett square, but let me real quick explain how I set it up. We know that both parents are heterozygous, which means that they have one of each allele. So that gave us the two sides. Then I filled in the boxes (I assume you've leaned how to do this, if message me and I can explain it).
Looking at the results we can see that 1/4 of the offspring are EE, 1/2 are Ee, and 1/4 are ee. Since the blue allele (e) is recessive, it'll only be expressed if no dominant brown alleles (E) are present. Therefore, only the ee genotype will exhibit blue eyes. So, 1/4 or 25% of the offspring will have blue eyes.
Hope that helps! If you need clarification or anything feel free to message me :)
When both parents are heterozyjous for brown eyes (Bb), there is a 25% chance their offspring will have blue eyes (bb). The chance of a green-eyed child from brown-eyed heterozygous parents is due to both carrying the green trait recessive to brown but dominant to blue.
For eye color, the brown allele (B) is dominant over the blue allele (b). If both parents are heterozygous for eye color (Bb), the expected percentage of their offspring with blue eyes can be calculated using a Punnett Square. The Punnett Square for this scenario would look like this:
Parent 1 (Bb) across the topParent 2 (Bb) down the sideAfter filling out the Punnett Square, the genotype ratio is:
1 BB (brown eyes)2 Bb (brown eyes)1 bb (blue eyes)Therefore, the percentage of offspring with blue eyes would be
25% (the one bb out of four possible outcomes).
Regarding the scenario with the green-eyed child, the correct statement among the given options is that both parents are heterozygous, having the green trait on the green-blue eye gene. This means the parents have the genotype Gg, where 'G' might represent the green allele, which is recessive to the brown eye allele but dominant over the blue eye allele.
how could you use biotechnology to protect a plant from insect damage?
a)insert Gene's that anti-insect chemicals into the plant
b)insert Gene's that produce insulin into the plant
c)add naturally produced anti-insect chemicals to the soil
d)spratt chemicals on plants to stop insects from eating them
Answer: a). Insert Gene's that produce anti- insect chemicals into the plants.
Explanation:
Biotechnology is a field of science which involves the manipulation of genetic make up of the organisms. This improves the quality of living beings.
Among the options given, insert gene that produce anti- insect chemicals into the plants is the correct option. This is because of the fact that this involves the manipulation of the genome of the organism that is plant to provide it resistance against insect infestation.
A car tire company is testing a new tire that they promote as having improved speeds under wet conditions. An experiment was performed on a wet, closed, half-mile track using the same car and driver. Two trials were performed, one with standard tires and one with the new WetMax tires. What can be concluded about the claims of the tire company? A) There is no hypothesis provided. B) The hypothesis of the company is refuted. C) The hypothesis of the company is verified. D) The hypothesis was neither verified or refuted.
My answer will be option D (The hypothesis was neither verified or refuted) because the results of the two tests carried out with standard tires and with the new WetMax tires are not reported. More information is missing to analyze the results and draw conclusions.
The answer is C) The hypothesis of the company is verified
what is the primary biomolecules that cells use for energy
ATP
glucose
NADH
NADPH
oxygen
Answer : The correct answer is -
ATP.
ATP (adenosine triphosphate) is considered as the energy currency of the cell.
It is used as a primary biomolecule by cell for carrying out the processes that require energy.
It carries large amount of energy in the phosphoanhydride bond (present between two phosphate molecules).
During hydrolysis of ATP, the energy is released and utilised by cell for various cellular processes.
PLATO ANSWER IS: ATP!!(A)
definition of mechanical weathering
MECHANICAL WEATHERING:
Mechanical weathering is defined as a natural process. It occurs when big rocks are broken down into smaller rocks. Sometimes you will hear it referred to as “physical weathering.” There are lots of different things that can cause physical weathering. For example, temperature changes and rain can both cause weathering.
Mechanical weathering is the process of breaking down rocks into smaller particles through physical forces, which contributes to the formation of soil and clastic sedimentary rocks.
Explanation:Definition of Mechanical Weathering
Mechanical weathering is one of the processes that break down rocks on Earth's surface into smaller particles. Unlike chemical weathering, it involves the physical disintegration of rocks without any change in their chemical composition. Mechanical weathering can occur due to temperature changes (which cause expansion and contraction in rocks), freeze-thaw cycles (where water in cracks freezes, expands, and then breaks apart the rock), or salt crystal growth. Formation of soil partly occurs as a result of mechanical weathering, where particles such as gravel, sand, and clay are produced from the disintegration of pre-existing rocks.
Over time, mechanical weathering contributes to the development of clastic sedimentary rocks through a process where broken down rock particles are transported and eventually settle in a new location. The understanding of mechanical weathering is essential for comprehending how landscapes and landforms evolve over time.
`nicotine (c10h14n2), a member of the nightshade family of plants, is an oily liquid that makes up between 0.6 to 3% of a cigarette's mass. contact with the liquid pure form can cause death within hours, as nicotine passes through the dermis and heads directly for the bloodstream. overdoses and death can easily occur in those smoking cigarettes with nicotine patches applied on their body. how many nicotine molecules are in 1.00 g of nicotine?
Answer: There are [tex]3.67\times 10^{21} [/tex] number of nicotine molecules in 1 gram of nicotine.
Explanation:
NIcotine is an organic compound with chemical formula of [tex]C_{10}H_{14}N_2[/tex]
Given mass of nicotine = 1.00 g
Molecular mass of Nicotine = 162.23 g/mol
[tex]\text{moles of compound}=\frac{\text{given mass of compound}}{\text{molar mass of compound}}=\frac{1.00 g}{162.23 g/mol}=0.0061 mol[/tex]
Number of molecules of compound:
[tex]\text{moles of compound}\times {Avogadro number}=0.0061 mol\times 6.022\time 10^{23}=3.67\times 10^{21} molecules[/tex]
There are [tex]3.67\times 10^{21} molecules[/tex] in 1 gram of nicotine.
what organelle is found in animal cells but NOT in plant cells?
Centrioles is only found in animal cells but not in plant cells.
you have observed two frantic foxes mating and producing 3 red offspring and 1 white offspring.
true/false: both parents are heterozygous for this trait
Answer:
The given statement is false.
Two frantic foxes mate and produce 3 red offspring and 1 white offspring in two possible manner
Case I: When one of the parent is heterozygous (Rr) and other is homozygous recessive (rr).
Case II: When both the parents are heterozygus (Rr).
What is a reason that fossil fuels are often used as an energy source?
Animals and plants are not affected by their usage.
Beneficial byproducts are created from their combustion.
There is an unlimited supply of them in the ground.
They are relatively inexpensive and easy to produce.
Answer:
They are relatively inexpensive and easy to produce.
Explanation:
Energy plays a vital role in modern world and our day to day life, from lightening our homes and offices to driving our cars and aeroplanes. About 80 Percent energy that we use in modern world comes from fossil fuels
Therefore, we can say that we rely on fossil fuels for our energy demands to a lot of extent. The main sources of energy in the form of fossil fuels are only three that are coal, petroleum and natural gas.
Although the usage of energy generated from fossil fuels creates harmful emission of gases like carbon di oxide and carbon mono oxide, and it is not very safe for the lives of human and animals, but still it is used by major world now adays.
The fossil fuels are also non renewable source of energy and there is a finite amount of them in world, therefore, scientists and environmentalists are focussing on the usage of green source of energy like biofuels etc.
However, the reason why fossil fuels are excessively used by world are :
They are easily availableThey can be stored and easily moved around the world.The energy from them is easily produced through combustion that can be used for cooking, transportation and heating purposes.Therefore, option number 4 is the best option.
Hope it help!
What is unusual about the fossils in the Burgess Shale?
They show the remains of mountain creatures.
Many were transitional fossils.
They show that dinosaurs and humans lived at the same time.
Many preserved both hard and soft body parts.
The correct answer is the last one
Many Preserved both hard and soft body parts
The Burgess Shale fossils are unique because they preserved both hard and soft body parts, providing a rare and detailed insight into life during the Cambrian Period.
Explanation:The Burgess Shale fossils are unusual because many preserved both hard and soft body parts. Most fossils only represent the hard parts of an organism, such as shells or bones, because soft parts decompose quickly and are rarely preserved. However, the unique conditions at the time of burial in the Burgess Shale allowed for the preservation of soft body parts, providing a detailed picture of early life forms. The fossils' exceptional preservation has indeed revealed a great deal about the diversity and complexity of life in the Cambrian Period.
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What is the main difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?
.The CNS involves the brain and spinal cord, and the PNS involves the body nerves.
.The CNS involves the body nerves, and the PNS involves the brain and spinal cord.
.The CNS involves sensory neurons, and the PNS involves motor neurons.
.The CNS involves motor neurons, and the PNS involves sensory neurons.
Answer: The correct answer is -
The CNS involves the brain and spinal cord, and the PNS involves the body nerves.
Explanation:
CNS (central nervous system) and PNS (peripheral nervous system) are the two different branches of nervous system in the human body.
CNS is further divided into Brain and spinal cord and it is responsible for receiving and interpretation of different information coming from the body parts. It controls most of the functions of body.
PNS on the other hand, possesses nerves that leave brain and spinal cord and innervates the rest of the body parts. In other words, it connects the CNS to other body organs.
Thus, first option is the right answer.
if an adult dog has 78 chromosomes the number of chromosomes in a dogs sperm cell will be
39
Reproductive cells are haploid (have 1/2 the chromosomes), whereas somatic/body cells are diploid (have the full set of chromosomes)
This makes sense if you think about it. Using the example from the question, every dog has 78 chromosomes. This includes two of each (there are two chromosome 1's, two chromosome 2's, etc. This is visible in the karyotype attached). One set of these chromosomes were inherited from the mother, and one set from the father. Each parent contributed 39 chromosomes (one chromosome 1, one chromosome 2, etc.). If the dog in the question were to have 78 chromosomes in its sperm cells, it would contribute two sets to its offspring. When combined with the chromosomes in the egg cell, the offspring would end up with extra chromosomes. Therefore, both the sperm and the egg cells will have 39 chromosomes, one of each. When combined, they will produce offspring with 78 chromosomes, the proper number.
Answer:
39 Chromosomes
Explanation:
This scientist is known for his work with natural selection, and he is known as the Father of Evolution.
Charles Darwin thats the answer
Final answer:
Charles Darwin is known as the Father of Evolution for formulating the theory of evolution by natural selection, which elucidated the development of life's diversity through common descent.
Explanation:
The scientist known for his work with natural selection and often referred to as the Father of Evolution is Charles Darwin. Darwin's pivotal role in biology stems from his theory of evolution by natural selection, which represents a fundamental unifying concept for understanding the diversity and adaptation of life on Earth. A British naturalist, Darwin not only contributed to evolutionary theory, but also influenced fields such as psychology through the functionalist school of thought. Moreover, his observations and insights were eventually compiled into his renowned work, 'Origin of the Species', conveying the revolutionary idea that all species of life have descended from common ancestors over geological time.
Part of Darwin's genius lay in realizing that selective breeding practices in agriculture were analogous to a natural process. He introduced the concept that competition for limited resources in nature would 'select' individuals better adapted to their environment, a process he termed 'natural selection'. This groundbreaking idea was the result of over two decades of meticulous research and global exploration.
What occurs when people are exposed to substances that their bodies are sensitive to?
histamines
allergies
antihistamines
allergens
Answer:
D. allergens
Explanation:
In an experiment, Marlene removes the six anthers from the flower. What best describes the ability of the altered flower to form seeds?
Ans.
In flowering plants, the male reproductive part or stamen is made up of a stack-like structure, known as filament and an ovule-like structure, known as anther. In anthers, microsporangia are present that produce pollen through mitosis.
Thus, 'if anthers are removed from a flower, it will not be able to form seeds as seeds are developed from zygote, that forms by the fusion of male gamete (pollen) and female gamete (ovum).'
Answer:
This flower will not be able to produce seeds.
Explanation:
The anther is a structure composed of two teak (halves), is fertile and responsible for the production of pollen grains, pollen grains are responsible for the generation of seeds when it comes into contact with the ovary of another plant. Thus, if a flower loses all its anthers, it means that it will not be able to generate pollen and will not be able to produce seeds.
Still in the juvenile state the anther begins the production of pollen. Each teak has two pollen bags (cavities) lined with a layer of nutrients called “tapetum”. It is still in this juvenile phase that the mother cells of the pollen grains are found, resting in each pollen sac. The anther has an outer layer, the epidermis, and an inner layer, the endothecium.
Read the example. A phone rang in the concert hall the orchestra stopped playing. What common sentence-construction error does this show? comma splice run-on sentence sentence fragment missing punctuation
Answer:
The correct answer is "run-on sentence".
Explanation:
Run-out sentence is a sentence-construction error that occurs when two or more than two independent sentences are not properly connected. In the example, the independent sentences "a phone rang in the concert hall" and "the orchestra stopped playing" were not properly connected, because no connector was used between them. Therefore, the question states an example of a run-out sentence.
Answer:
Run-On-Sentence.
Explanation:
Just Took it on Edg
PLZZ HELP ASAP (100PTS)
Recall the story of Three Blind Mice where the farmer’s wife cuts off the mouse tails with a carving knife. Because of their tailless condition, the farm cat can’t catch the tailless mice which allows them to be better able to survive and reproduce than the tailed mice.
Using only the information given in this problem, explain what will happen to this population of mice over time (50 years)
Because the mice are losing a predator(cats), their population will grow with time because they no longer have a tail to be caught by.
where the farmer’s wife cuts off the mouse tails with a carving knife. Because of their tailless condition, the farm cat can’t catch the tailless mice which allows them to be b
Electrons in the outermost energy level are usually involved in chemical reactions which are called ___________________ .
Answer:
Chemical bonding
Explanation:
Outer most shell's electrons are called valence electrons and they are responsible for the formation of chemical bonds either ionic or covalent when atoms react with each other.
Outer most electrons hold immense importance in the type of chemical bonding an atom will go through in the formation of a molecule.
For example, sodium has only one electron in outermost shell so it is very hard for sodium to share electrons and become stable. Therefore, it never goes for covalent bonding but only goes for ionic bonding where it gives off one electron to another atom (say chlorine who has 7 electrons in outermost shell) and in this process sodium chloride is formed and both sodium and chlorine get stable electronic configuration.
Please see picture for better understanding. Therefore, we can say that Electrons in the outermost energy level are usually involved in chemical reactions which are called chemical bonding or formation of chemical bonds.
Hope it help!