Question

The isolated populations where genetic drift is more pronounced are _______ .

• A. Large populations
• B. Only plant populations
• C. Only viral populations
• D. Small populations

Answer 1

The correct option is D Small populations

In small, reproductively isolated populations, special circumstances exist, that can produce rapid changes in gene frequencies totally independent of mutation and natural selection. These changes are due solely to chance factors. The smaller the population, the more susceptible it is to such random changes. This phenomenon is known as genetic drift.