The ultimate source of new genetic variation is
A) perfect replication of the genome.
B) mating.
C) artificial selection.
D) mutations in the genome.
E) structural adaptations.

Question

Quizplus · Accepted Answer

Mutations in the genome are the ultimate source of new genetic variation. They can introduce new alleles or change the frequency of existing alleles within a population. Mutations can be caused by errors in DNA replication, exposure to mutagens, or other genetic factors. Mating and artificial selection can both act on existing genetic variation, but they do not generate new genetic variation on their own. Structural adaptations are physical changes that organisms make in response to environmental pressures, but they do not involve changes to the DNA sequence.

The Ultimate Source of New Genetic Variation Is