Which one of the following criteria is necessary for natural selection to occur

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Suppose you were the commissioner of corrections for your state. which correctional activities might come within your domain? which mostly would not

The two main stages of cell division are called