In a large population of randomly breeding organisms, 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,

The frequency of both  homozygous and heterozygous dominant species will start reducing and the frequency of homozygous recessive species will start increasing

Explanation:

Given-

Initial frequency of recessive allele is

Since there is no  migration and no selection the population follows Hardy's Weinberg's equilibrium.

Thus , the frequency of dominant allele as per Hardy Weinberg's equation would be -

Humans enter this ecosystem and selectively hunt individuals showing the dominant trait. This means that they would be killing both homozygous and heterozygous dominant species.

Therefore, the  frequency of both  homozygous and heterozygous dominant species will start reducing and the frequency of homozygous recessive species will start increasing.