Hybridization and Genetic Extinction

A set of vocabulary flashcards covering key terms and concepts related to hybridization and genetic extinction.

Hybridization

Mating between different species or two genetically distinct populations that produces hybrid offspring.

Introgression

The incorporation of genes from one species into another through hybridization and backcrossing.

Backcross

When offspring from hybrids mate with one of the parental species, creating a new group of individuals.

Hybrid Zone

A geographic area where two distinct species meet and reproduce, creating hybrid offspring.

Genetic Extinction

A phenomenon where fertile hybrids displace one or both parental populations through the production of hybrid swarms.

Outbreeding Depression

A situation where hybrid offspring have lower reproductive success or survival compared to their parent species.

Hybrid Vigor

Enhanced biological qualities such as growth rate and fertility in hybrids compared to their parents.

Hybrid Swarm

A population where all individuals are hybrids to varying degrees due to extensive hybridization.

Conservation Strategies

Methods used to manage hybrid populations, often determined on a case-by-case basis depending on the nature of hybridization.

Galapagos Tortoises

An example of a species affected by hybridization and genetic extinction, with various races historically located on different islands.