Microevolution: Mutation, Genetic Drift And Natural Selection

Microevolution is the change in the genetic makeup of the gene pool of a population. It refers to the change in allelic frequencies that occur from generation to generation. There are three ways that microevolution can occur: mutation, genetic drift and natural selection. Mutation is the change in a gene of the DNA of an organism. This may change an allele and possibly the alleles frequency in the gene pool of the population. Genetic drift is an unpredictable change in a populations allelic frequencies from generation to generation. Genetic drift is also a change by chance. An example is the founder affect, in which a small group from a population settles into an area that is isolated from the original population and pass down their genes from