Question

A population of 1000 birds exists on a small Pacific island. Some of the birds are yellow, a characteristic determined by a recessive allele. The others are green, a characteristic determined by a dominant allele. A hurricane on the island kills most of the birds from this population. Only ten remain, and those birds all have yellow feathers. Below are several statements about this hypothetical situation. Please write 1-6 and next to each number write T if true of Fif false.

1) Assuming that no new birds come to the island and no mutations occur, future generations of this population will contain both green and yellow birds.
2) Assuming that no new birds come to the island and no mutations occur, future generations of this population will contain only yellow birds.
3) This situation represents diversifying selection. 4)This situation represents directional selection.

Answer 1

1) False

2) True

3) False

4) True

Step-by-step explanation:

(3 and/or 4 may be wrong, but 1 and 2, i'm positive they aren't0

1 is false and 2 is true because recessive alleles x recessive alleles = reccessive alleles, and since yellow is recessive, and you have no green birds, there is no possibility of having green birds without at least one green bird parent.

(I hope that makes sense)

I believe 4 is true because Directional selection occurs when a single phenotype is favored, which is what happens here.

I'm not too sure about 3 though, sorry

Hope it helps!!