Question

Choose the correct answers from the alternatives given.
Genetic drift, or changes in allelic frequency due to chance factors, occurs in populations that are very

• A. isolated
• B. mobile
• C. small in number
• D. closely adapted to local environments

Answer 1

The correct option is C small in number

Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance. Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.

So the correct option is C, small in number.