Question

In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner:

• A. Mutations
• B. Random drift
• C. Selection
• D. Migration

Answer 1

Answer: (B)

Random drift

Answer 2

Random genetic drift is the process by which allele frequencies in a population change due to random chance events, such as genetic sampling errors. It can lead to fluctuations in allele frequencies over time, even in the absence of natural selection, mutation, or migration. Random drift tends to be more significant in smaller populations, where chance events can have a larger impact on allele frequencies.

So, the correct option is (B): Random drift