AP BIOLOGY

Detailed explanation-1: -Mutation Generates New Alleles The whole human family is one species with the same genes. Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique.

Detailed explanation-2: -The mutation of genes is an important source of genetic variation within a population. Mutations can be random (for example, when replicating cells make an error while copying DNA), or happen as a result of exposure to something in the environment, like harmful chemicals or radiation.

Detailed explanation-3: -Mutations can be caused by high-energy sources such as radiation or by chemicals in the environment. They can also appear spontaneously during the replication of DNA. Mutations generally fall into two types: point mutations and chromosomal aberrations. In point mutations, one base pair is changed.

Detailed explanation-4: -Three primary sources of genetic variation are mutation, genetic recombination, and gene flow in the population.