Can you tell from this tree whether a C at position 15 evolved before or after a T at position 15? Explain your answer.

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a.the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%