Mechanisms of Evolution

Front

Genetic drift where small groups separate from a larger population to form new colonies.

Back

Founder Effect

Front

Exchange of genes between populations.

Back

Gene Flow

Front

Total genetic info in a population; all alleles present.

Back

Gene pool

Front

Mechanism of evolution involving movement into/out of a population.

Back

Gene flow / genetic drift.

Front

Mechanism of evolution where organisms better adapted to their environment survive and reproduce.

Back

Natural selection

Front

Pattern of natural selection where one extreme trait is favored, leading to evolution towards that extreme.

Back

Directional selection

Front

Pattern of natural selection where both extreme traits are favored over the average, leading to evolution in both directions.

Back

Disruptive Selection

Front

What is it called when a population is drastically reduced by a disaster, leading to a new gene pool from survivors?

Back

Bottleneck effect

Front

Process creating new DNA variations and alleles

Back

Mutation

Front

Pattern of natural selection where the average trait is most advantageous, leading to evolution away from extremes.

Back

Stabilizing selection