A change in allele frequencies over time is known as:Group of answer choicesgenetic drift.gene flow.admixture.gene migration.

Answer

A change in allele frequencies over time is known as genetic drift.

Genetic drift refers to random fluctuations in the frequencies of alleles (variants of a gene) in a population between generations. This phenomenon can lead to significant changes in allele frequencies, especially in small populations, and it is one of the key mechanisms of evolution, along with natural selection, gene flow, and mutation.

In contrast:

• Gene flow refers to the transfer of genetic material between populations.
• Admixture involves the mixing of two or more genetically distinct populations.
• Gene migration is closely related to gene flow and also involves the movement of alleles between populations.

Each of these concepts plays a role in population genetics, but the specific term for the random change in allele frequencies over time is genetic drift.