The question is incomplete as it does not have the options which are:
UV light is most mutagenic at a wavelength at which DNA and RNA strongly absorb. DNA has four nucleotides. Introduction of a cloned DNA into another organism results in the production of the corresponding protein product. DNA is located only where the primary genetic function is known to occur.Answer:
DNA is located only where the primary genetic function is known to occur.
Explanation:
DNA acts as the genetic material of almost all living organisms on Earth except few viruses which contains RNA as their genetic material.
Since it is not necessary that the DNA is present only at the site where its function is known is incorrect as DNA is found in every cell of the multicellular organism and in a unicellular organism. It is the expression of the specific genes which the cell acquire during the differentiation.
All other provided option except the selected options is evidence of the DNA as the genetic material.
The experiments of Martha Chase and Alfred Hershey in 1952 provided evidence that DNA, and not protein, is the genetic material in eukaryotes and bacteria.
Explanation:The experiments conducted by Martha Chase and Alfred Hershey in 1952 provided strong evidence that DNA, and not protein, is the genetic material in eukaryotes as well as bacteria.
Chase and Hershey studied a bacteriophage virus that infects bacteria and labeled the DNA and protein of the virus with different radioactive isotopes.
They found that only the DNA, and not the protein, was passed on to the next generation of virus particles, confirming that DNA is the hereditary material.
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A food scientist is developing a new and improved cereal bar. She consults with you to about the ordering of the ingredients on a food label. The ingredients are: Sugar: 30 g, Puffed wheat: 28 g, Dry milk powder: 5 g, Red food coloring: 35 mg, Salt: 2 g. What is the appropriate order in which to list these ingredients on the food label?
Answer:
Sugar – 30 g
Puffed Wheat – 28 g
Dry milk powder- 5 g
Salt – 2 g
Explanation:
The very basic rule of listing the ingredients in any food item are as follows –
a) The item with the maximum weight must be placed at the top
b) The item with the lowest weight must be placed at the bottom
c) Any ingredient whose weight < 5% of the total food weight, then it must not be listed.
Based on the above rule, the correct order of ingredient list is
Sugar – 30 g
Puffed Wheat – 28 g
Dry milk powder- 5 g
Salt – 2 g
No need to put Red food coloring in the list
Module Two
a.According to the phylogenetic tree in this virtual lab, all anole lizards (genus Anolis) are more closely related to one another than they are to Leiocephalus carinatus.i.True
b.Anolis cristatellus is more closely related to Anolis occultus than it is to Anolis evermanni.i.False
c.Based on this phylogeny, do lizards of the same body type tend to be more closelyrelated to one another than to lizards of different body types?i.No
d.In general, are lizards on the same island more closely related to one another than to similar-looking lizards from other islands?i.Yes
e.The tree is more consistent with which of the following hypotheses:i.The same types of anole lizards evolved independently on each of the islands.
Answer:
Please read the explanation seeing the phylogeny attatched
Explanation:
a. is true. When you read a phylogeny you do it from tips to roots, tips that are close together come from the same node. All Anolis come from the same node, and Anolis genus and Leiocephalus genus share a common ancestor more distant than all Anolis.
b. If you see the tree, A. cristellatus and A. evermanni share a common ancestor, and the group that contains A. cristellatus and A. evermanni, share a common ancestor with A. occulatus. So A. cristellatus and A. evermanni are closely related among them than with A. occulatus
c and d. In the figure with colors, if lizards of the same body are closely related to each other than to lizards of different body types, your phylogeny should be colored by body shape. If not, your phylogeny should be colored by island (I use another group phylogeny to illustrate, but you should see the patterns on you phylogeny)
According to the phylogenetic tree in this lab, anole lizards are more closely related to one another than to Leiocephalus carinatus(true).Anolis cristatellus is not more closely related to Anolis occultus than to Anolis evermanni. Lizards on the same island are generally more closely related to each other than to similar-looking lizards from other islands.
Explanation:a. True: According to the phylogenetic tree, all anole lizards (genus Anolis) are more closely related to one another than to Leiocephalus carinatus.
b. False: Anolis cristatellus is not more closely related to Anolis occultus than to Anolis evermanni based on the tree.
c. No: The phylogeny does not suggest that lizards of the same body type are more closely related to one another.
d. Yes: In general, lizards on the same island are more closely related to one another than to similar-looking lizards from other islands.
e. The tree is more consistent with the hypothesis: 'The same types of anole lizards evolved independently on each of the islands.'
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Exposing inner mitochondrial membranes to ultrasonic vibrations will disrupt the membranes. However, the fragments will reseal "inside out." The little vesicles that result can still transfer electrons from NADH to oxygen and synthesize ATP.
These inside-out membrane vesicles will _____.
A) become acidic inside the vesicles when NADH is added
B) become alkaline inside the vesicles when NADH is added
C) make ATP from ADP and Pi if transferred to a pH 4 buffered solution after incubation in a pH 7 buffered solution
D) hydrolyze ATP to pump protons out of the interior of the vesicle to the exterior
Answer:B
Explanation:
This is Because Plasma membranes purified from human red cells were Converted into small vesicles by disruption in alkaline buffer of low ionic strength. Therefore, Most of these vesicles were inside-out.
Assume hydrolysis of ATP proceeds with G = -30 J/mol. RT = -2.5ATP + H2O -> ADP + PiWhich expression gives the ratio of ADP to ATP at equilibrium, if Pi = 1.0M?a. e^2b. e^3c. e^6d. e^12
Answer: (d) e^12
Explanation:
The relationship between the standard free energy change, ΔG, and the equilibrium constant, K at a particular temperature is represented Using the formula ΔG = -RTlnK, where G = -30, RT = -2.5 and [Pi] = 1
lnK = ΔG/-RT
lnK = -30/-2.5
lnK = 12
taking exponents of both sides
e^(lnK) = e^12
K = e^12
A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH are ALL three of the enzymes below the LEAST effective?
a
2
b
5
c
7
d
10
Answer:
B. 5
Explanation:
Judging from the graph plot, all three of the enzymes below would be LEAST effective at PH of 5
Answer:
5
Explanation:
The distinguishing characteristic between birds and all other organisms is ________.
Answer:the possession of feathers
Explanation:birds are warm blooded animals , that possess feathers.these feathers cover their bodies and used for flight and warmth.their forelimbs are modified into wings,which fold into a Z shape at rest.feathers grow from the skin follicles and are replaced by scales on their legs.they possess oil gland to dress the feathers.
Other features of birds include
1) beaks with no teeth
2) fully ossified bones with air cavities
3)females with left ovary and oviducts only
With regard to the functioning of the thyroid gland, which is an essential element for the manufacturing of thyroxine and triiodothyronine?
Answer:
The correct answer is- iodine
Explanation:
Thyroid glands is an important endocrine gland of the body which release hormone called thyroid hormone in the blood. It plays an important role in metabolism, brain development, and function, muscle control, etc.
The active form of thyroxine is triiodothyronine and the formation of thyroid hormone requires the availability of iodine. Four iodine atoms are present in thyroxine and 3 is present in triiodothyronine. Without iodine, they can not be produced.
Therefore iodine is the essential element that is required for the manufacturing of thyroxine and triiodothyronine.
What are the three sections of the small intestine and what role does each section play in digestion or absorption?
Answer:
The three sections of the small intestine are the duodenum,
Explanation:
The duodenum
It receives chyme from the stomachs
Its intestinal cells enzymes such as secrete amylase, sucrase, and lipase enzymes that break down fats and sugars.
The jejunum
It is covered in villi and microvilli giving the name THE PRINCIPAL SITE of digestion.
the ileum.
Aid absorption e.g. amino acids, lipids, fat-soluble vitamins, and vitamin B12.
Answer:
The three sections of the small intestine are the duodenum, jejunum and the ileum
Explanation:
Duodenum: The beginning and the shortest part of the small intestine where iron is absorbed. Duodenum is shaped like a letter "C.
Food passes from the stomach to duodenum through a muscle called the pyloric sphincter.
Jejunum: The middle part of the small intestine where sugars, amino acids, and fatty acids are absorbed.
Ileum: The last part of the small intestine where vitamin B12, bile acids, and other nutrients are absorbed
About 45 to 60 minutes after LTP, all of the following occur among dendritic spines EXCEPT ______.
a. partial bridging of the cleft
b. appearance of more AMPA receptors that are transported from the dendrites
c. enlargement or splitting to become separate spines
d. pruning of those that were not used in the process
Answer:
Pruning of those that were not used in the process.
Explanation:
LTP (long-term potentiation) may be defined as the strengthening of the synapse that are mainly based on the recent pattern activity. They are mainly based on the synaptic activity.
This LTP also denotes the phenomena of the synaptic plasticity. Dedndritic spines shows the LTP. The binding of the cleft occurs at the synaptoc end and the transfer of the receptor strength increases. Different spines amy form during the LTP. The pruning do not occur even if they are not in use.
Thus, the correct answer is option (d).
The total collection of alleles in a population at any one time makes up that population's ________.a. genotypeb. gene poolc. allele frequencyd. heterozygote frequency
Which of the following represents the correct order of anatomical structures in the nephron?
A) glomerulus, proximal convoluted tubules, loop of Henle, distal convoluted tubules
B) proximal convoluted tubules, loop of Henle, distal convoluted tubules, glomerulus
C) glomerulus, distal convoluted tubules, loop of Henle, proximal convoluted tubules
D) distal convoluted tubules, glomerulus, proximal convoluted tubules, loop of Henle
E) glomerulus, loop of Henle, proximal convoluted tubules, distal convoluted tubules
Answer: Option B
Explanation:
The structural and functional unit of kidney is nephrons. They are present in huge numbers in the kidney that helps in filtration of the blood in the body.
The anatomical structure of the nephron is made of different parts. The structure in the nephrons are in the order as follows.
The first is proximal convoluted tubule, loop of Henle and then distal convulated tubule and finally the glomerulus. These structures combinely helps in the purification of blood.
The correct order of the anatomical structures in the nephron is glomerulus, proximal convoluted tubules, the loop of Henle and distal convoluted tubules (Option A).
A nephron is the functional and structural unit of the kidney that acts to generate urine and thus removes waste from the blood.The glomerulus refers to the network of small blood vessels found at the beginning of a nephron.The distal convoluted tubule refers to the tubule between the loop of Henle and the collecting tubule.The loop of Henle is a U-shaped part of the nephron tubule that acts to conduct the urine.In conclusion, the correct order of the anatomical structures in the nephron is glomerulus, proximal convoluted tubules, the loop of Henle and distal convoluted tubules (Option A).
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The thin layer of white blood cells and platelets found above the packed red cells in centrifuged blood is called the ______
Answer:
Buffy coat.
Explanation:
Between the plasma, and red blood cells the platelets, and white blood cells form a thin white layer which is known as Buffy coat following density gradient centrifugation of the blood.
Centrifugation is the process where the distinguish between cell fragments, and cell from the liquid intracellular matrix occurs. Centrifugation is a technique which separates the particles according to their size, density, viscosity and shape with the help of centrifugal force.
In a particular species of mammal, black hair (B) is dominant to green hair (b), and red eyes (R) are dominant to white eyes (r). When a BbRr individual was mated with a bbrr individual, the observed distribution of offspring was as follows: black-red 1,070; black-white 177; green-red 180; green-white 1,072. Based on these data, what is the recombination frequency?
Answer:
0.14
Explanation:
the formula is = total of the recombinant gene/total of all the gene
= 177+180/(1070+177+180+1072)
= 357/2499
= 0.14
A flat, wide, white, fibrous sheet of connective tissue that attaches a flat muscle to a bone or to deep muscles is known as a/an ____.
Answer:
Aponeurosis
Explanation:
Aponeurosis refers to the connective tissue elements that extend as a broad, flat sheet. Therefore, an aponeurosis refers to a sheet-like tendon that joins one muscle with another or a muscle with bone. Aponeuroses are the extensions of connective tissue that go beyond muscle fibers. They are different from tendons in shape. An aponeurosis is wide and flat. For example, epicranial aponeurosis is present at top of the skull between the frontal and occipital bellies of the occipitofrontalis muscle.
An aponeurosis is a flat, wide, white, fibrous sheet of connective tissue that attaches a flat muscle to a bone or to deep muscles.
Explanation:A flat, wide, white, fibrous sheet of connective tissue that attaches a flat muscle to a bone or to deep muscles is known as an aponeurosis.
Which refers to the movement of a piece of one chromosome to another nonhomologous chromosome?
Answer:
Translocation
Explanation:
Translocation is a chromosomal abnormality (mutation) in which a chromosome breaks and a portion of it reattaches to a different chromosomal location. It can occur during the formation of sperms and eggs during meiosis.
Translocation is of two main types: 1. Reciprocal location, in which two fragments break off from two different (non-homologous) chromosomes and switch places.
2. Robertsonian translocation, in which an entire chromosome (usually acrocentric) becomes attached to another chromosome (acrocentric) at the centromere to form a metacentric chromosome.
Translocation can either be BALANCED, where no genetic information is missing or additional. Hence, there is an even exchange with no adverse effect on the affected individual or UNBALANCED, where the exchange of chromosomal material is unequal resulting in an extra or missing genes.
Steroid hormones exert their action by ________. A. entering the nucleus of a cell and initiating or altering the expression of a gene B. binding cell receptors and initiating cAMP activity C. entering the cell and activating mitochondrial DNA D. activating the hypothalamic release of regulating hormones
Answer:
The correct option is A. Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene.
Explanation:
Steroid hormones are derived from cholesterol and regulate multiple biological processes. All steroid hormones exert their action by crossing the plasma membrane and by binding with their respective intracellular receptors. They stimulate cell growth in a very different way, their lipophilic nature gives them the ability to cross lipid barriers, so, without the need for extracellular signals, these hormones can easily enter the cell, cross the cytoplasm and reach the nucleus. There they bind to specific receptors that are associated with DNA promoter regions, modifying their structure and promoting the expression of the genes under their control.
Steroid hormones work by entering the nucleus of a cell and initiating or altering the expression of a gene. They do this by forming a hormone-receptor complex with specific receptors in the cytoplasm before going into the nucleus.
Explanation:Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene. Unlike many hormones that bind to receptors on the cell surface and initiate a signal cascade, such as cAMP activity, steroid hormones can pass through the cell membrane because they are lipophilic. Once inside the cell, they bind to specific receptors in the cytoplasm, forming a hormone-receptor complex. This complex then enters the nucleus and binds to specific genes, initiating or altering their expression, thus influencing the cell's function. It is no the case that these hormones would activate mitochondrial DNA or instigate the hypothalamic release of regulating hormones.
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The original source of genetic variation that serves as the raw material for evolution is ________.
(a) mutation
(b) genetic drift
(c) gene flow
(d) sexual recombination
(e) random fertilization
Answer:
(a) mutation
Explanation:
A mutation is defined as a change in an individual's DNA, these mutations can be transmited in gametes and therefore they modify the gene pool of a population, over long time the accumulation of these mutation can lead to evolution.
I hope you find this information useful and interesting! Good luck!
Collectively, which group of organisms are the most diverse representatives of life?
Answer:
the most diverse group of organisms are the " insects".
Explanation:
the group of organisms which are the most diverse representatives of life include the " insects". they have a vast variety and are extremely large in numbers and have a variety of species.
insects colonize nearly every corner and nook of the globe.
they have evolved from very simple to complex organisms.
Bacteria are the most diverse group of species on Earth.
When considering the full variety of life, or species diversity, there is an astounding range of organisms on Earth. Estimates suggest that Earth's biodiversity includes somewhere between 1 to 6 billion distinct species. Among these, the most diverse group of species is bacteria, which belong to one of the three major lineages of life along with Archaea and Eukaryotes.
Bacteria, as single-celled organisms, exhibit a vast array of characteristics and exist in virtually every environment on Earth. They demonstrate incredible adaptability and genetic diversity, which contributes to their overwhelming numbers.
Calculate the calories for a flour tortilla that contains 3 grams of fat, 2 grams of protein, and 17 grams of carbohydrate.
Answer: 103 calories
Explanation:
We know that carbohydrates contain 4 calories per gram, protein contains 4 calories per gram, and fat contains 9 calories per gram.
Given : A flour tortilla contains : 3 grams of fat, 2 grams of protein, and 17 grams of carbohydrate.
calories in 3 grams of fat = 3 x 9 = 27 calories.
calories in 2 grams of protein = 2 x 4= 8 calories.
calories in 17 grams of carbohydrate = 17 x 4 = 68 calories
Then , the total number of calories in flour tortilla will be
= calories in 3 grams of fat+ calories in 2 grams of protein +calories in 17 grams of carbohydrate
= 27+ 8+68 calories.
=103 calories.
Hence, there are 103 calories for a flour tortilla that contains 3 grams of fat, 2 grams of protein, and 17 grams of carbohydrate.
To calculate the calories in a flour tortilla, multiply the grams of each macronutrient by the number of calories per gram for that nutrient. Then, add up the calories from each macronutrient to find the total calories.
Explanation:To calculate the calories in a flour tortilla, we need to know the number of calories per gram for each macronutrient. Fat contains 9 calories per gram, protein contains 4 calories per gram, and carbohydrates contain 4 calories per gram.
Given that the tortilla contains 3 grams of fat, 2 grams of protein, and 17 grams of carbohydrates, we can calculate the total calories as:
Calories from fat = 3 grams x 9 calories/gram = 27 calories
Calories from protein = 2 grams x 4 calories/gram = 8 calories
Calories from carbohydrates = 17 grams x 4 calories/gram = 68 calories
Total calories = calories from fat + calories from protein + calories from carbohydrates = 27 calories + 8 calories + 68 calories = 103 calories
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In figure 13-3 which code specifies the same amino acid as UAU
Answer:The answer is A. UAC
Explanation:
Dogs are widely used by the police as biological recognition systems to detect drug smuggling and drug caches. Yet recent evidence suggests that insects, rather than mammals, might be used more effectively in this capacity. In the 1950s, German biologist Dietrich Schneider developed the first method that enabled researchers to record activity in insect olfactory nerves and to identify the compounds or class of compounds that trigger a particular behavioral response. The position of the insect olfactory organs on the surface of its body allows for direct investigation of the system’s response. Schneider’s technique formed the foundation of an olfactory detection system based upon insects, a system that is at least as effective as the ones based upon mammals.Insects have olfactory systems that are very similar to those of vertebrates. Insects first detect odors via finger-like protuberances on the antenna, called olfactory sensilla. The odorant molecules pass through pores in the outer cuticle of the sensilla and become attached to an odorant-binding protein. This protein carries the hydrophobic molecules through the lymph fluid found inside the cell and attaches them to receptors on the dendritic projections of a sensory nerve cell. Finally, these receptors send signals to the central nervous system, allowing researchers to detect and interpret the responses.It can be inferred from the passage that insects would be less useful for helping researchers to detect drugs if which of the following were true?A) They were as accurate as, but not more accurate than, dogs in detecting drugs.B) Insect olfactory systems did not deliver odorants to nerve cells, as vertebrate olfactory systems do.C) Dietrich Schneider did not develop the first method that enabled researchers to record the activity in insect olfactory nerves.D) They did not have finger-like protuberances for detecting odors.E) The signal sent to the insect’s central nervous system did not allow researchers to classify the compound that triggered the response.
Answer:
B. Insect olfactory systems did not deliver odorants to nerve cells, as vertebrate olfactory systems do
Explanation:
if insect olfactory system did not deliver odorants to the nerve cell, there will not be any basis for their use in detecting drugs.
What are the three factors that contribute to water scarcity?
a) Climate change, ocean droughts, and water pollution.
b) Hurricanes, overuse of groundwater, and water pollution.
c) Climate change, overuse of groundwater, and water pollution.
d) El niño, hurricanes, and ocean drought.
Answer:
c) Climate change, overuse of groundwater, and water pollution
Climate change: Increase in temperature leads to and increase in water evaporation and also affect the amosphere's ability to keep water in
Overuse of water: Many people living in more priviledged countries consume excess water than needed (eg: some people leave the tap running while brushing their teeth)
Water pollution: I don't think I need to explain this one
Answer:
C
Explanation:
A researcher studying a group of individuals of the same species living and interacting in a shared environment is said to be working at the level of a ______
Answer:
the answer is " POPULATION".
Explanation:
A population is a group of individuals of same species living and inhabiting the same environment. in other words : All the inhabitants of a particular space forms a population in which the species interbreed.
so the correct answer is POPULATION.
Free-running rhythms are those that occur in environments devoid of __________________ .
Answer:
Free running rhythms
Explanation:
Free running or Circadian rhythms are independent rhythms
that strive when the organism environment is unprovided with necesaary time cues such as constant light by switching on or off the genes that influence the molecular structure of biological clocks.
In classical conditioning, if the conditioned stimulus is repeatedly presented without the unconditioned stimulus, what will likely occur?
A. stimulus generalizationB. stimulus discriminationC. extinctionD. spontaneous recovery
Answer:
C - Extinction
Explanation:
Extinction is the gradual removal or cessation of a learned behavior. It usually occurs when the behavior is not reinforced.
Classical conditioning can be defined as a process in which a conditioned stimulus becomes paired with an unrelated unconditioned stimulus in order to elicit a conditioned response (behavior) from the subject.
It was a process incepted by Ivan Pavlov.
In classical conditioning, if the conditioned stimulus is repeatedly presented without the unconditioned stimulus, the conditioned response is gradually eroded until it becomes extinct and forgotten.
In classical conditioning, if the conditioned stimulus is repeatedly presented without the unconditioned stimulus, extinction will likely occur.
option c is correct
Explanation:In classical conditioning, if the conditioned stimulus is repeatedly presented without the unconditioned stimulus, extinction will likely occur.
Extinction refers to the gradual weakening and eventual disappearance of the conditioned response when the conditioned stimulus is no longer paired with the unconditioned stimulus. This occurs because the conditioned stimulus no longer predicts the unconditioned stimulus, and the learned association weakens over time.
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A stroke victim may be alert but suffering from aphasia. Which of the following describes this condition?
Answer:
Loss of speech
Explanation:
Aphasia is a language and communication disorder that is common in stroke patients. It is often caused by an injury to the brain, but it is not limited to a stroke. It can also be caused by a head trauma, neurological illness and/or brain tumor.
Aphasia can come in different forms of speech impediment. Sometimes the affected will experience difficulty putting words together, or won't be able to associate things/persons with their names, or cannot read all of a sudden. At times, they come in combination of these problems.
Answer:
Loss of speech.
Explanation:
what are all the possible sources of genetic variation in sexuaally repdoucing organisms?
Answer:
Mutation, Gene flow/Migration/Immigration of gene and Recombination
Explanation:
For any species there are majorly three sources of genetic variations –
a) Mutation – This leads to change in the genetic code with in the DNA of an organism. Sometimes mutation does not produce any effect on the organism. Mutation can produce both positive and negative impact. Its effect is observed in long run as its rate is slow.
b) Recombination – When an organism undergoes sex, his/her genes recombine with the genes of mating partner. The rate of recombination is faster than the rate of mutation
c) Gene flow /Migration/Immigration of gene – In this gene travel from one set of population to the other. The frequency of gene in the mixed population lies between the original population gene frequency and the migrated or donor population gene frequency
Seeing a snake, and then simultaneously running away from it and becoming frightened, is the sequence of events postulated by ________ theory. a) Plutchik's the Cannon-Bard b) Schachter-Singer c) James-Lange.
Answer:
A) the cannon bard theory.
Explanation:
the cannon bard theory is an emotion that reflects that trigger feelings and physical reactions at the same time. in this specific example fear would be a feeling and running would be a physical response. could also be described as fight or flight response.
Seeing a snake and then simultaneously running away from it and becoming frightened is the sequence of events postulated by Plutchik's Cannon-Bard theory. So option A is correct for the statement.
What are flight and fright responses?Plutchik's Cannon-Bard explained that both the emotions and the physical activities occur simultaneously in some instances. An example is seeing a snake and then simultaneously running away from it and becoming frightened.
Seeing a snake initiates a danger feeling, and as a result, the running starts, which is a physical activity. In such a flight-and-fright situation, many hormonal activities change in the body. The sympathetic nervous system regulates different organs, such as the heart and breathing rate, in such a situation. It also activates muscle functions in order to avoid situations such as running, etc. At the same time, other, less necessary functions of the body slow down, such as digestion.
Hence, seeing a snake and then simultaneously running away from it and becoming frightened is the sequence of events postulated by Plutchik's Cannon-Bard theory. So option A is correct for the statement.
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Genetically modified organisms are created by A. Inserting chemical pesticides into embryos to improve pest or disease resistance.B. Inserting pieces of DNA, which will result in pest or disease resistance in a crop.C. Injecting growth hormones into seeds or pregnant animals.D. Cloning of good producersto make millions of offspring.
Answer:
Genetically modified organisms are created by
B. Inserting pieces of DNA, which will result in pest or disease resistance in a crop.
Explanation:
A genetically modified organism (GMO) is an organism in which the genetic material has been changed using techniques of genetic engineering . Genes have been transferred within the same species, across species (creating transgenic organisms) and even across kingdoms. New genes can be introduced, or endogenous genes can be enhanced, altered or knocked out.
Creating a genetically modified organism is a long process. The gene that genetic engineers wish to insert into the host organism must be isolated and fused it with other genetic elements. A number of techniques are available for inserting the isolated gene into the host genome. Recent advancements using genome editing techniques like CRISPR-Cas9 that can be used to edit genes within organisms have made the production of GMO's much easier.
Which of the following types of reproductive barriers separates a pair of insect species that could interbreed except that one mates on goldenrod flowers and the other on autumn daisies that both blossom at the same time?
A) temporal isolation
B) habitat isolation
C) behavioral isolation
D) mechanical isolation
E) gametic isolation
Answer:
Answer is B, habitat isolation.
Explanation:
Habitat isolation can simply be explained as a situation whereby two insects or organisms of the same species, that have the ability to meet and reproduce could not, because they are living in different habitats.
These different habitats might even be in the same geographical location or area. That is, one insect might be living in or on the surface of the water, and the other living in the soil or the tree. Due to this effect, the insects are unlikely to meet and reproduce.