Help please asap Directional selection differs from stabilizing selection in that:

a. Directional selection favors one extreme phenotype, whereas stabilizing selection favors intermediate over extreme phenotypes

b. Directional selection requires new mutations whereas stabilizing selection uses existing variation

c. Directional selection operates only in small populations, whereas stabilizing selection only works in large populations

d. they both do nothing, these are terms I made up while writing this retake

Astudent visits the beach during a very hot day she steps on the santa and jumps because it is so hot what type of heat transfer is demonstrated by the sand in this example

Mike was adopted, and his biological family history is unknown. although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. mike has heard about commercial laboratories that can compare segments of your dna to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. the results of these types of tests are highly inconclusive. if mike's dna showed that he shares similarities in a segment of dna with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. these tests can cost more than $2,500 and are not covered by many insurance companies. do you think that mike should undergo the genetic tests? explain your answer. what are the potential pros and cons of having such tests done? describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations.

What are the types of mutations, and how does each alter the encoded protein? college level answer