Biology · Evolution

Genetic drift is the correct answer, as it describes the random changes in allele frequencies that occur in a population due to chance events, more significantly impacting smaller populations.

Diversity is incorrect, as it refers to the variety of genes and alleles within a population. Linkage is also incorrect, as it involves genes that are inherited together due to their physical proximity on a chromosome, not due to random changes. All of these are incorrect because genetic drift is the only option that involves randomness in allele frequency changes.

This option is correct because genetic drift refers to the random fluctuations in allele frequencies that occur by chance, particularly in small populations.

Diversity refers to the range of different alleles and genotypes present in a population, not the random change of their frequencies.

Linkage describes the tendency of genes that are close together on a chromosome to be inherited together, not the random change in allele frequencies.

All of these are incorrect because only genetic drift pertains to the random change in allele frequencies.