In pea plants flower color is a completely dominant trait with purple flowers being dominant to white flowers. Based on this if you crossed two pure bred flowers, one white and one purple, what would be the expected probability of phenotypes in the F2 generation?

A. 75% purple 25% white
B. 25% purple 75% white
C. 50% purple 50% white
D. 100% purple 0% white

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .