Populations and Evolutions Study Guide

Front

What is genetic drift?

Back

A random change in allele frequency.

Front

Which type of selection favors individuals at one end of the phenotype distribution?

Back

Directional selection.

Front

What is the Hardy-Weinberg principle?

Back

A principle that states allele frequencies remain constant unless disturbed.

Front

Which of the following is NOT a condition that can disturb genetic equilibrium?

Back

Large population size.

Front

What is the significance of genetic recombination during sexual reproduction?

Back

It increases genetic variation.

Front

Define allele frequency.

Back

The proportion of a specific allele among all allele copies in a population.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Explain stabilizing selection.

Back

A type of natural selection that favors average phenotypes and reduces variation.

Front

What is disruptive selection?

Back

A type of natural selection that favors extreme phenotypes over average ones.

Front

Define gene flow.

Back

The transfer of genetic material between populations through migration.