give a brief description of how the five different aspects of evolution resulted in genetic variation
1) Mutation: Genetic variation results from the occurrence of mutations, which are changes in DNA. These mutations can result in new alleles or variant forms of genes.
2) Genetic drift: Genetic drift is a random process that can lead to genetic variation by causing changes in allele frequencies through the sampling of individuals in a population.
3) Gene flow: Gene flow, or the movement of individuals between populations, can introduce new alleles into a population and increase genetic variation.
4) Natural selection: Natural selection promotes beneficial traits that increase survival and reproductive success. This can lead to the fixation of certain alleles and the loss of others, resulting in genetic variation.
5) Sexual selection: Sexual selection can result in the evolution of traits that aid in mate attraction or competition (e.g. colorful feathers or large antlers), which can increase genetic variation within a population.