Question

Which of these is an example of gene flow?

A. German immigrants settle in a colony in Eastern Pennsylvania without mixing with the locals.

B. A few black sparrows join a population of brown sparrows and mate with them.

C. Indiscriminate hunting reduces the blue whale population, which later revives.

Answer 1

i believe the answer is B

Answer 2

option B. . Gene flow is the movement of individuals from one population to another. It is also called migration.