dna mutations understanding evolution
Mutations. Mutation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology  all aspects of its life.So a change in an organism's DNA can cause changes in all aspects of its life.Mutations are random.utation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology  all aspects of its life.