Natural selection causes changes in populations of organisms, not individual organisms, because

A.
organisms within sexually reproducing populations all have the same genetic information and the same likelihood of survival.
B.
differential reproductive success caused by acquired behaviors is the most important mechanism of natural selection.
C.
organisms within sexually reproducing populations can only pass on genes that reduce their reproductive success.
D.
differential reproductive success caused by genetic variation is necessary for the process of natural selection.

1 answer

D. differential reproductive success caused by genetic variation is necessary for the process of natural selection.