Their mutation rates increase. The presence and distribution of alleles diverge. They respond differently to the same selection pressures. They interbreed to maintain uniformity of traits.
I gave my students this multiple choice question: A geological change separates a wolf population into two new populations. Genetic drift directly causes which effect in the two new populations over time?

Only one answer is correct among these 4 choices:
- Their mutation rates increase.
- The presence and distribution of alleles diverge.
- They respond differently to the same selection pressures.
- They interbreed to maintain uniformity of traits.

Could you tell me which one is correct?

The presence and distribution of alleles diverge.