Mendelian Genetics in Populations II: Migration, Genetic Drift, and Nonrandom Mating

Flashcards covering key concepts related to Mendelian Genetics, focusing on Migration, Genetic Drift, and Nonrandom Mating.

Migration

The movement of alleles between populations (gene pools), not seasonal movement of individuals.

Genetic Drift

Random fluctuations in allele frequencies in small populations due to chance events.

Founder Effect

A phenomenon where a new population is established by a very small number of individuals from a larger population, leading to a loss of genetic variation.

Bottleneck Effect

A sharp reduction in the size of a population due to environmental events or human activities, resulting in decreased genetic diversity.

Heterozygosity

The presence of different alleles at one or more loci on chromosomes.

Inbreeding Depression

Reduced biological fitness in a given population as a result of inbreeding, or breeding of related individuals.

Positive Assortative Mating

A form of nonrandom mating where individuals tend to mate with others who are phenotypically similar.

Negative Assortative Mating

A mating pattern where individuals with different phenotypes mate more frequently than expected.

Allelic Diversity

The measure of the number of alleles present in a given population.

Equilibrium Frequency

The frequency of an allele in a population that remains constant over generations assuming no evolutionary influences.