1- explain why there is so much variation/diversity within the human population 2- explain why juman gametes only have half of the genetic information

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.