Question

Which type of selection leads to increased phenotypic and genetic variation?

Answer 1

The answer to the first question is letter B. This is because disruptive selection is opposite to stabilizing selection which decreases genetic variation or genetic diversity. Among the choices on the second question, the second option (B) is the most plausible because it could mean "difference within the same specie". This video would likely to show sexual isolation.

Answer 2

Both of the question is B. Hope it help!