AP BIOLOGY

Detailed explanation-1: -Origins of genetic variation Mutations and recombination are major sources of variation.

Detailed explanation-2: -How might the numbers of slow rabbits be affected in the future? The slower rabbits will decrease in number as they have higher death rates. A lemming population lives in a cold, mountainous region. Over time, the climate in the region becomes drier and warmer.

Detailed explanation-3: -So the correct option is ‘mutation’.

Detailed explanation-4: -Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.