Answer:
The dark colored moths were due to a genetic mutation, and were more than likely present before the Industrial Revolution. Their fitness was low because predators could easily see them on the light-colored trees. They would be eaten before they could reproduce and pass on their genetic mutation. After the trees became darkened by soot, the darker colored moths now had the survival advantage, able to "hide" from predators. The lighter colored moths became more visible to predators, and the advantage shifted. Now, the light colored moths were more visible to predators, were eaten, and didn't have the chance to reproduce. The darker moths with the mutation had the survival advantage, blending in with the soot-covered trees, and were able to reproduce at higher rates, passing the mutation on to later generations.
Answer: A×E
Explanation:
To Improve on a particular trait selection is made using the best parent that could give the best results. A trait that will be improved on should not affect your field, hence as a plant breeder the Goal is a traits that has been improved and will give the maximum yield. What a farmer needs is an improved variety with a better yield hence the seeds will not be approved for commercial commodity if low yielding.
Individual A—Yield: 179 bushels/acre; drought resistance: high
Individual E—Yield: 200 bushels/acre; drought resistance: medium
Individual A is high in resistance but has a moderate yield while individual E has a medium resistance but high yielding, a cross between A×E will give a more resistance variety and a better yielding variety because they are both the best parents for the genes needed and the two gene will be introduced into the new individual.
A mother passes on her mt(DNA) or mitochondrial DNA which sometimes includes genetic material but a father only passes down a Y chromosome if he has a son. No genetic material.
Answer
Thermoregulation
Blood clotting
Regulating blood sugar
Explanation:
Negative feedback loop reduces excessive function..
Cooling the body when it's hot.
Reducing blood sugar when it's too much.
Clotting blood to stop excessive bleeding.
Contractions during childbirth is a positive feedback.
D. They convert glucose into another form of energy used by cells.