Question

2. natural selection is most likely to have different effects on organisms with which pair of alleles?
-AA and Aa
-AA and aA
-Aa and aA
-Aa and aa

Answer 1

I think AA and aa because they are the more dominant genes nice jerry the slime pic btw

Answer 2

@Madgirlwithabluebox

Answer 3

If we're assuming A is dominant to a, then the answer needs to be D. If this is the case, both AA and Aa produce the same phenotype, so there is no reason for natural selection to favour one genotype over the other. This means options A, B, and C can't be right, because every pair of alleles produces the same phenotype (the dominant one).

In D, Aa has the dominant phenotype while aa has the recessive phenotype, so natural selection may have different effects on these two phenotypes if one produces an adaptive advantage over the other.

Answer 4

it was Aa and aa