Question

In a large population of randomly breeding individuals, the frequency of a recessive allele is initially 0.3. There is no migration and no selection. Humans enter this ecosystem and selectively hunt individuals showing the dominant trait. When the gene frequency is reexamined at the end of the year, __________. chapter 13 mastering biology

Answer 1

Answer:

The correct answer is "the frequency of the homozygous dominants will go down, the frequency of the heterozygous genotype will go down, and the frequency of the homozygous recessives will go up".

Explanation:

In this example, an stable population with a frequency of recessive allele of 0.3 is disturbed by humans entering the ecosystem, which selectively hunt individuals showing the dominant trait. In consequence, the individuals with the dominant trait will have lesser chances of survival and reproduction, resulting in the frequency of homozygous dominants going down, as well as the heterozygous genotype since they exhibit the dominant trait too. On the other hand, the individuals showing the recessive trait will have better chances of survival and reproduction, resulting in an increase of the frequency of the homozygous recessives.