Question

When a population is split into smaller groups, why do these groups develop different traits.

Answer 1

Answer:

The correct option is B) Mutations that arise in one group are not passed to the other group through reproduction.

Explanation:

There will be higher genetic variability in a larger population as compared to a smaller population. In a smaller population, the alleles or gene flow will be lesser as compared to the larger population.

When a population is split, conditions like genetic drift become slower. Mutations which arise in one group will be limited to that smaller group only as they cannot mate with the other population. In a larger population, mutations pass on rapidly and there are more chances of genetic drift to occur.