Do living things evolve because of mutations of their DNA?

Answer 1

Mutations usually cause things to evolve, depending on the gene which is mutated. Mutations are changes in the genetic material of an organism resulting in changes in the gene pool (if the mutated traits are passed on). If the mutated gene is a desirable/advantageous one, then the chances that it willbe passed on to future generations is increased. In this process, which occurs over a period of time, old genes may be lost in the gene pool, resulting in evolution.

I don't see how it doesn't cause evolution.

Answer 2

Yes, mutations in DNA can contribute to genetic variation, which is important for evolution. Natural selection acts on this variation, allowing individuals with beneficial mutations to survive and reproduce, leading to changes in the population over generations.