EVERYDAY SCIENCE

Detailed explanation-1: -Mutation Generates New Alleles Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique. They account for the variation we see in human hair color, skin color, height, shape, behavior, and susceptibility to disease.

Detailed explanation-2: -Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.

Detailed explanation-3: -Genetic variation is a prerequisite to evolutionary change. In the absence of such variation, no subsequent change can be achieved. Genetic variation is ultimately all generated by mutation.

Detailed explanation-4: -Mutations can introduce new alleles into a population of organisms and increase the population’s genetic variation.