Answer:
D
Explanation:
Genes for traits that help an organism be more successful reproductively can be expected to become more common in the future. Therefore, option D is correct.
How traits are responsible for evolution?The term "evolution" refers to the shift in an organism's population's inherited features over time. Living things pass on a variety of traits to their offspring when they reproduce.
Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function. The likelihood of a genetic variant being passed down to the following generation increases if a trait is favorable and aids the individual in surviving and procreating (a process known as natural selection).
Thus, genes for traits that help an organism be more successful reproductively can be expected to become more common in the future. Therefore, option D is correct.
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In people sickle cell disease is expressed codominantly. When an individual is heterozygous they have both normal and sickled cells, but has only sickled cells when they have only recessive alleles. What is the phenotypic ratio of offspring with two heterozygous parents?
A. 1 all round cells : 1 mixed round and sickled cells : 0 all sickled cells
B. 1 all round cells : 2 mixed round and sickled cells : 1 all sickled cells
C. 1 all round cells : 0 mixed round and sickled cells : 1 all sickled cells
D. 3 all round cells : 0 mixed round and sickled cells : 1 all sickled cells
Answer:
B.
Explanation:
When you solve this answer using a punnet square, you start with Ss and Ss.
1 all round cells : 2 mixed round and sickled cells : 1 all sickled cells (B) is the correct option.
What is sickle cell disease?Sickle cell disease is an inherited blood disorder that affects the production of hemoglobin, a protein in red blood cells that carries oxygen throughout the body. It causes red blood cells to become misshapen and break down, leading to various health problems.
The possible genotypes of the offspring are SS, Ss, and ss, with respective probabilities of 1/4, 1/2, and 1/4. The corresponding phenotypes are all round cells, mixed round and sickled cells, and all sickled cells, respectively.
Since sickle cell disease is codominant, the phenotype of the heterozygous individuals is a mixture of the phenotypes of the homozygous individuals. Thus, the phenotypic ratio of the offspring is 1 all round cells : 2 mixed round and sickled cells : 1 all sickled cells.
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Is there a way in which solar energy can be harnessed for use by humans directly? How can you relate this to the first law of thermodynamics.
Answer:
The solar energy can be directly used as heat or natural light .
Explanation:
This enables us to conserve energy because energy conversion is less efficient compared than its direct use. The first law of thermodynamics states that the energy can be neither created nor destroyed, and that during the process of conversion many energy is lost as heat.
Wild red wolves were once common in the southeastern United States. As
this area became more developed, the number of wild red wolves was
drastically reduced to about 20 individuals by 1967. These remaining
wolves were captured and bred. In 1987, some captive-born red wolves
were released into an area of North Carolina. Today, there are more than
50 wild red wolves living in North Carolina. Identify two ways development
in the southeastern United States most likely contributed to the decline of
the red wolf population.
Answer:
One is wolf Hunting
Explanation:
i don't know the other one Sorry ;(
Development in the southeastern United States led to a decline in red wolves due to habitat loss and human-wildlife conflict, alongside habitat fragmentation that disrupts their ecological needs.
The decline of the red wolf population in the southeastern United States can be attributed to two main factors linked to development. The first factor is habitat loss, which occurs when land is cleared for urbanization, agriculture, and infrastructure, reducing the natural areas where red wolves can hunt and live. The second factor is human-wildlife conflict, where wolves may be hunted or killed due to perceived threats to livestock and human safety, or competition for resources.
Moreover, development can lead to fragmentation of habitats, creating isolated patches of land that hinder the movement and genetic diversity of wildlife populations. This fragmentation also makes it difficult for species like the red wolf to find sufficient food and mates, which is essential for maintaining a healthy population.
1. Why do you think scientists struggle to determine the closest relatives of giant pandas?
2. Based on your knowledge of bears and raccoons, which do you think the giant panda is most closely related to? Why?
Answer:
1.There is a struggle between determining the closely related species of giant pandas because there is no as such ancestral evidence for the panda family.
Many study and research have shown that they can be either close to bears or raccoons but in spite of several sequencing there is no conclusion yet to closeness of pandas.
Even the red panda and giant pandas are compared, the only similarity is that they eat bamboos but they are not closely related. The red pandas are closely relates to ferrets and giant pandas to polar bear.
2. The giant pandas are more closely related to bears as compared to raccoons. The study have shown this they share more recent ancestors to bears.
Monohybrid Mice, i need help
Answer/Explanation:
See attached images showing the crosses on a Punnett square as well as the genotype and phenotypes of each cross.I. Cross between a female Gg with a male gg (GG X gg):
1. Probability of getting gray offspring (Gg) = 2/4 (¼+ ¼) = ½
2. Probability of getting albino offspring (gg) = 2/4 (¼+ ¼) = ½
3. There are 2 possible genotypes among the offspring, which are Gg and gg.
4. There are 2 possible phenotypes among the offspring, which are gray and albino coat color.
5. Probability of getting heterozygous offspring (i.e. Gg) = 2/4 = ½
6. Probability of getting homozygous offspring (i.e. GG or gg) = Probability of getting GG + Probability of getting gg = ½ + 0 = ½
7. The color of the female that was crossed (i.e. Gg), is gray color. The allele for gray coat color (G) is dominant over the allele for albino coat color (g).
8. The color of the male (gg) that was crossed is albino. The recessive allele (g) for albino coat color, in its homozygous state would express itself in the absence of the dominant G allele for gray color.
II. Cross between homozygous gray female with a heterozygous male (GG X Gg):
1. Probability of getting gray offspring (GG or Gg) = 4/4 (i.e. ¼+ ¼ + ¼ + ¼ ) = 1
2. Probability of getting albino offspring (gg) = 0
3. There are only 2 possible genotypes among the offspring, which are GG and Gg.
4. There is only 1 possible phenotype among the offspring, which is gray coat color.
5. Probability of getting heterozygous offspring (i.e. Gg) = 2/4 (i.e. ¼+ ¼ ) = ½
6. Probability of getting homozygous offspring (i.e. GG or gg) = Probability of getting GG + Probability of getting gg = 0 + ½ = ½
7. The genotype of the female that was crossed is GG, given that the female is homozygous gray.
8. The male crossed is a heterozygous male (Gg), the male is gray.
III. Cross between a gray female, whose father was albino, with a heterozygous male (Gg X Gg):
We can make a good guess of the genotype of the female, given that gray color is dominant over albino, and the father was albino (gg). The father can only contribute sperm having only (g) allele, while the mother must contribute only a (G) allele to give a gray offspring. The gray female is definitely heterogyzous female i.e Gg
1. Probability of getting gray offspring (Gg or GG) = ¾ (½ + ¼)
2. Probability of getting albino offspring (gg) = ¼
3. There are 3 possible genotypes among the offspring, which are GG, Gg, and gg.
4. There are 2 possible phenotypes among the offspring, which are gray and albino coat color.
5. Probability of getting heterozygous offspring (i.e. Gg) = 2/4 = ½
6. Probability of getting homozygous offspring (i.e. GG or gg) = Probability of getting GG + Probability of getting gg = ¼ + ¼ = ½
7. The genotype of the female is Gg. We know this because we were given that it is gray in color, and gray is dominant over albino. Also, given that the father was albino (gg), a (g) allele can only be contributed by the father to combine with the dominant (G) allele to give us a female that has heterozygous gray coat color (Gg).
8. The genotype of the male is Gg. We know this because we were given that it was a heterozygous male. If an organism is heterozygous, it has different alleles controlling that trait.
IV. Cross between an albino female, whose father was gray, with a gray male, whose mother was albino (gg X Gg):
The albino female’s genotype is gg, because the g allele is recessive. The gray male’s genotype, whose mother was albino (gg) is definitely Gg, because gray is dominant, and to get a gray offspring, a G allele from the mother of the male must combine with the g allele that the albino father can only contribute i.e. Gg or GG from mother X gg from father = Gg (the gray male offspring).
1. Probability of getting gray offspring = ¼ + ¼ = ½
2. Probability of getting albino offspring (gg) = ¼ + ¼ = ½
3. There are 2 possible genotypes among the offspring, which are Gg, and gg.
4. There are 2 possible phenotypes among the offspring, which are gray and albino coat color.
5. Probability of getting heterozygous offspring (i.e. Gg) = ¼ + ¼ = ½
6. Probability of getting homozygous offspring (i.e. gg or GG) = ½ + 0 = ½
7. The genotype of the gray father of the albino female (gg) is Gg. Of the two possible genotypes of the gray father (i.e. GG or Gg), Gg is the most likely genotype to contribute the recessive g allele that would pair up with another g allele from the mother to give an albino female (gg), i.e. Gg (father) X Gg (Mother) or Gg (Father) X gg (Mother) = gg (albino female)
A monohybrid cross is a genetic cross that considers only one trait. Results from these crosses led to the concept of dominant and recessive traits and Mendel's Law of Segregation. Punnett squares visually present the likely outcomes of these crosses.
Explanation:A monohybrid cross involves the mating of individuals who have two different alleles for a single trait. For example, Mendel ran several monohybrid crosses using pea plants. The trait being examined was the color of the pea—the parent plants had either green or yellow peas. After breeding a purebred yellow pea plant with a purebred green pea plant, all offspring were yellow, showing that yellow is the dominant trait and green the recessive.
Monohybrid crosses are useful tools in predicting the outcome of genetic crosses because they follow Mendel's Law of Segregation. According to this law, during the formation of reproductive cells, pairs of genetic traits separate, and offspring receive one factor from each parent.
A Punnett square is a tool that provides a visual representation of the possible combinations of genetic traits the offspring could inherit. For monohybrid crosses, a Punnett square will give a 3:1 ratio, representing the likelihood of the offspring expressing the dominant trait over the recessive trait, given that both parents are heterozygous.
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What do Virginia watershed programs do? Check all that apply.
build dams
produce water filters
remove estuaries
protect wildlife
assist with flood reduction
Answer:
a,d,e
Explanation:
Answer:
a, d, e
Explanation:
just did the assignment !
Which of the following DOES NOT describe the structure of DNA?
1.Double helix
2.Carbohydrate monomer
3.Contains A-T, C-G base pairs
4.Sugar-phosphate backbone
Answer:
2.Carbohydrate monomer
Explanation:
Monosaccharides are the monomers that make up carbohydrates. Glucose is an example of a monosaccharide. Glycerol and fatty acids are the monomers that make up lipids. Nucleotides are the monomers that make up nucleic acids
What conditions must scientists provide for viruses to multiply
Answer:
Viruses can only reproduce after they have infected host cells. Viruses are simply packaged sets of genes that move from one host cell to another. Unlike bacteria and other living parasites, a virus has no structures to maintain—no membranes or organelles needing ATP, oxygen, or glucose.
A database is an efficient way to share information because it:
O
A. can be searched quickly for the most relevant observations.
O
B. can evaluate the validity of a logical argument in a discussion.
O
C. is often the most significant source of error in an experiment
O
D. provides the most precise measurement of a natural object.
PLEASE ANSWER NOW I WILL MARK FIRST ANSWER BRAINLIEST
Answer: A) Can be searched quickly for the most relevant observations.
What are the three things that blood is responsible for transporting through the body.
Nerve impulses
wastes such as CO2
French fries
oxygen
nutrients
DNA
Answer:
look it up
Explanation:
got it right
Answer:
oxygen ,nutrients and wastes eg co2
What is responsible for the apparent movement of the Sun across the sky throughout the day?
Why is the cell cycle important in multicellular organisms?
THINK OF IT THIS WAY IF WE HAVE NO CELLS IN USE WE DIE we need cells to live
What is taxonomy?
A. A trait that is only in an offspring
B. A shared ancestor
C. A way of classifying organisms
D. A type of organism
Answer:
its c
Explanation:
taxonomy is the science of naming, defining and classifying groups of biological organisms on the basis of shared characteristics.
What is the initial stage of all stars
Answer:nebula
Explanation:
Took the test
Answer: nebula is right.
Explanation: I did the test on edge 2023.
The first eight as seen here are the ____________ vertebrate and send messages to the back of the head, neck, shoulders, arms, hands and diaphragm.
Answer:
Spinal nerves branch off from the spinal cord to innervate the rest of the body. These complex networks of nerves enable the brain to receive sensory inputs from the skin and to send motor controls for muscle movements. In the cervical spine, there are eight pairs of spinal nerves labeled C1 to C8, which innervate the neck, shoulder, arm, hand, and more.
How are detritivores different from decomposers?
Need answer right now
During which process is water produced
A. Alcohol fermentation
B. Acetyl Coa formation
C electron transport train
D citric acid cycle
PLS HELP ASAP
The correct answer is Option C.Water is produced during the electron transport chain, which is a step in aerobic respiration. Alcohol fermentation does not result in the production of water, but instead, it creates ethanol from pyruvic acid.
Water is produced during cellular respiration processes, mainly in the electron transport chain (ETC), which is part of aerobic respiration. The ETC occurs in the mitochondria where oxygen is the final electron acceptor and combines with electrons and protons to form water (H2O). In contrast, during alcohol fermentation, ethanol is produced rather than water. Alcohol fermentation involves the conversion of pyruvic acid to acetaldehyde and then to ethanol, with no production of water. The citric acid cycle (also known as the Krebs cycle) likewise produces high-energy electron carriers but does not directly yield water.
Explain how a long-term environmental change can lead to the development of a new species.
Answer:
When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. ... Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.
Answer:
it is possible that when long-term enviornment changes it can create new diferences in the worlds for example, with tsunamis or hurican it might create new DNA with all the damage did.
Explanation:
I am sorry if I am wrong
please tell me if i am
10. The Florida panther is a type of mountain lion. About
a hundred years ago, Florida panthers scattered and
mated with other subspecies of mountain lions in nearby
populations.
a. Explain how the gene flow in this population would be
affected by the introduction of the Florida Panthers.
b. Would genetic variation increase or decrease in the
mountain lion population?
Answer:
a) Inbreeding
b) Decreased
Explanation:
Florida panther is considered an endangered species that is found in very few numbers in the environment.
In the given question,
a) The Florida panther scattered in the mountains which could affect the flow of the genes (migration). When it mated with the other sub-species, it could have led to the inbreeding.
b) Since the lion scattered in the mountains, the gene flow could have occurred and this could have decreased the genetic variation in the population of the Panthers.
Answer:
a) Gene flow in a genetic population is defined as the transfer of genetic variation from one population to another.
Gene flow is considered as one of the impotant mechanism of genetic diversity in a population. Migrant affects the genetic diverisity in a population by modifying the allele frequencies.
When florida Panthers introduced with subspecies of mountain lions it increases the genetic flow in the population of mountain lion as the florida panther were carrying a particular variant of a gene.
B) Due to high genetic flow the genetic vriation in the population will decrease between the two groups and results in increasing homogeneity. High rate of gene flow lead to a combination of the two gene pools that reduces the genetic variation. Hence, genetic variation will decrease in the mountain lion population.
Which organisms release carbon dioxide during cellular respiration?
During cellular respiration, plant cells use oxygen and release carbon dioxide and water instead. During photosynthesis, plant cells use carbon dioxide to make glucose and release oxygen.
Answer:
its C
Explanation:
Observing animal tracks is an example of
observation, which is used to estimate population size.
A. mark and recapture
B. indirect
C. sampling
D. direct
Answer:
The answer is B. Indirect!
Explanation:
Felicity draws this diagram on the board to explain one of Mendel's experiments for her classmates. She says that it shows the cross between two first-generation offspring. What is the error in her diagram?
OPTIONS:
A. All peas should be green.
B. All peas should be yellow-green.
C. One pea should be green and three peas should be yellow.
D. One pea should be yellow and three peas should be green.
Answer:
C. One pea should be green and three peas should be yellow.
Explanation:
In Mendel’s experiment, the allele for yellow seed color iss dominant, while the green allele is recessive. His experiment involves crossing two true breeding pea plants that are homozygous for various selected traits. For example, for seed color, each of the parent plants are homozygous for each of the seed color. i.e. one is homozygous dominant for yellow seed (YY), while the other is homozygous recessive for green color (yy).
The first filial generation gotten from the cross between both parents has all the offspring of the F1 generation having yellow seed color. They were all heterozygous (Yy), since yellow color is dominant over green color, all F1 individuals appeared similar to their parents and were all had yellow seeds.
When two first-generation offspring were crossed together, the ratio of individuals having Yellow seed color to green seed color was 3:1, meaning a cross between two F1 generation should give us 1 pea plant with green seed color and 3 peas should have yellow.
Answer:
c
Explanation:
Which of these is a way climate change positively affects organisms?
A. Reduces current food supply
B. Provides new food sources
C. Reduces habitat area
D. Increases ocean acidity
Climate change can have a positive impact by providing new food sources for some species, enabling them to expand their range into areas that were previously too cold. Therefore, the correct option is B
The question being asked is which of these is a way climate change positively affects organisms. The correct answer is B. Provides new food sources. While climate change can have many harmful effects on the environment and organisms, one of the potential positive impacts is that it can create new niches and opportunities for certain species. For example, as the climate warms, some species may expand their range into areas that were previously too cold for them and find new sources of food.
Matter and energy move among plants, animals, decomposers, and the environment within an ecosystem. Through photosynthesis, plants use sunlight, air, and water to grow and become sources of energy for other living things. What statement best explains this phenomenon or occurrence?
Answer: A-grasshopper
Explanation:
Answer: A} Grasshopper
Explanation: USATESTPPREP
the process when molecules tend to move from an area of high concentration to an area of low concentration
Answer:
It’s diffusion
Explanation:
bio ninja helped out a lot when i took ib bio
Diffusion is the process of molecules moving from an area of high concentration to an area of low concentration. It is important in various biological systems.
Explanation:The process you are describing is called diffusion. Diffusion is the movement of molecules or ions from an area of higher concentration to an area of lower concentration, down a concentration gradient. This movement occurs because molecules are in constant random motion and tend to spread out to achieve a more even distribution.
For example, when you open a bottle of perfume in one corner of a room, the perfume molecules will eventually spread throughout the entire room. This is due to diffusion.
Diffusion is an important process in various biological systems, such as the exchange of gases in the lungs, the absorption of nutrients in the intestines, and the movement of molecules across the cell membrane.
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cardiovascular function of system
Answer:
Transportation of nutrients, gases and waste products
Protection from infection and blood loss
Maintenance of constant body temperature (thermoregulation)
Maintaining fluid balance within the body
Explanation:
Types of leaf modifications and examples of each
Answer:
Hi there
Modification Definition Example
1) Tendrils The leaves are modified into slender wiry and
coiled structures called leaf tendrils
and support climbers to climb Pisum Sativum
2) Spines The leaves modified into a pointed
structure and usually protect them from herbivores. Opuntia
3) Phyllode It is a green extended structure formed by the modification of petiole or rachis of leaf that carries out photosynthesis. Acacia
4) Storage leaves Leaves become fleshy due to storage of water and food material. Aloe
5) Cotyledons The mature embryo shows either one or two cotyledons. Angiosperms and gymnosperms
6) Leaf bladders Some of the leaves of aquatic plants modified into leaf bladders to trap small insects. Utricularia
7) Leaf Pitcher Lamina of the whole leaf is modified into a lid known as a pitcher which traps insects to fulfil the need of nitrogen. Nepenthes
Maggie is a member of her school’s environmental club and is interested in recycling. She asks the question, “How does exposure to the environment affect recyclable plastics?”
What best describes why and how Maggie should change her question to make it a better scientific question?
A)The answer to the question leads to a testable hypothesis, so the question should be changed to prevent testing.
B)The question involves giving an opinion about recycling, so it should be changed to rely only on facts.
C)The focus of the question is too broad, so it should be narrowed to a single environmental factor.
D)The results are too uncertain, so the question should be changed to one that has a known outcome.
Answer:
c
plz mark me as brainlest
Answer:
The guy above me is right
Explanation:
Jed is skating down a ramp.As his height decreases, his___________ energy decreases, and his__________________ energy increases
Answer: potential, kinetic.
Explanation:
Which of the following is a component of biodiversity?
A the variety of organism species in an area:
B the genetic variation within a community of species
C the variety of different communities in an area
D All of the above are components of biodiversity.
Answer: D All of the above are components of biodiversity.
Explanation: