Mechanisms of Evolution

any change in the allelic frequencies in a population due to change ​

• Genetic Drift

• Founder Effect

• Gene Flow

• Bottleneck

occur when a small sample of a population settles in a location separated from the rest of the population.

• Genetic Drift

• Founder Effect

• Gene Flow

• Bottleneck

occurs when a population declines to a very low number and then rebounds

• Genetic Drift

• Founder Effect

• Gene Flow

• Bottleneck

is when genes (peoples) come into or leave a population

• Genetic Drift

• Founder Effect

• Gene Flow

• Bottleneck

mating that is not random

• Mutation

• Founder Effect

• Nonrandom mating

• Bottleneck

cause a change in the allelic frequency by literally changing the genotype of the individual.

• Mutation

• Founder Effect

• Nonrandom mating

• Bottleneck

“the best adapted survive and reproduce” ​

• natural selection

• artificial selection

• sexual selection

Tags

NGSS.HS-LS4-4

When change in allelic frequency is based on the ability to attract a mate.

• natural selection

• artificial selection

• sexual selection

Tags

NGSS.HS-LS4-4

the effect of humans purposefully breeding

animals to select for desirable traits

• natural selection

• artificial selection

• sexual selection

Selection that results in one extreme version of the trait being favored.

• stabilizing selection

• directional selection

• disruptive selection