Question

which is a correct statement about mutations? a. mutations decrease variety in the population. b. mutations ensure alleles never change. c. mutations are always bad. d. mutations increase variety in a population.

Explanation:

Mutations are changes in DNA sequence. They introduce new alleles, thus increasing genetic variety in a population. They are not always bad (some can be beneficial or neutral) and they cause alleles to change, not prevent change.

Answer:

D. Mutations increase variety in a population.