A woman is a natural blonde and her husband has black hair. All their children have black hair. Why do you think that the blonde hair did not appear in any of the children?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells

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 .