Molds animals and plants so that traits that enhance the probability of survival are passed on to subsequent generations.

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

The climate on the leeward side of a mountain differs from that on the windward side mostly in