Section 2
Population Genetics
Book
Version 32
By Boundless
By Boundless
Boundless Biology
Biology
by Boundless
4 concepts
![Thumbnail](../../../../../../figures.boundless-cdn.com/20514/square/coquina-variation3.jpeg)
Genetic Variation
Genetic variation is a measure of the variation that exists in the genetic makeup of individuals within population.
![Thumbnail](../../../../../../figures.boundless-cdn.com/27460/square/random_genetic_drift_chart.jpg)
Genetic Drift
Genetic drift is the change in allele frequencies of a population due to random chance events, such as natural disasters.
![Thumbnail](../../../../../../figures.boundless-cdn.com/19041/square/figure-19-02-04.jpeg)
Gene Flow and Mutation
A population's genetic variation changes as individuals migrate into or out of a population and when mutations introduce new alleles.
![Thumbnail](../../../../../../figures.boundless-cdn.com/27471/square/1024px-american_robin_close-up.jpg)
Nonrandom Mating and Environmental Variance
Population structure can be altered by nonrandom mating (the preference of certain individuals for mates) as well as the environment.