Question

Which type of selection leads to increased phenotypic and genetic variation?
A. directional selection
B. disruptive selection
C. stabilizing selection
D. species selection

Jezelyn needs to create a project that shows reproductive isolation in action and decides to make a video. Which of the following would make the best project?
A. a video that shows a large river that has penguin populations on both sides
B. a video that shows penguin species that have different mating dances
C. a video that shows a penguin that is laying eggs
D. a video that shows penguins in a tidal pool and an open ocean

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!