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Related Concept Videos

Hybrid Zones

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.

What is a Species?

What is a Species?

Speciation Rates

Speciation Rates

Resonance

Resonance

The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.

IR Absorption Frequency: Hybridization

IR Absorption Frequency: Hybridization

Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...

Hybridization of Atomic Orbitals II

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

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Related Experiment Video

Updated: Mar 17, 2026

High Resolution Whole Mount In Situ Hybridization within Zebrafish Embryos to Study Gene Expression and Function

High Resolution Whole Mount In Situ Hybridization within Zebrafish Embryos to Study Gene Expression and Function

Published on: October 19, 2013

Hybridization and extinction.

Marco Todesco¹, Mariana A Pascual¹, Gregory L Owens¹

¹Department of Botany and Biodiversity Research Centre University of British Columbia Vancouver BC Canada.

Evolutionary Applications

|July 29, 2016

Summary

This summary is machine-generated.

Hybridization can lead to rare species extinction via genetic swamping, but constructive outcomes are also possible. Management should focus on preventing exotic introductions and restoring diverse habitats to mitigate extinction risks.

Keywords:

conservation demographic swamping gene flow genetic swamping hybrid fitness introgression invasive species outbreeding depression

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Area of Science:

Ecology
Evolutionary Biology
Conservation Genetics

Background:

Hybridization poses a dual threat to biodiversity, potentially causing extinction through genetic or demographic swamping.
Conversely, hybridization can offer a lifeline to small, inbred populations, promoting genetic rescue.

Purpose of the Study:

To systematically review existing literature on hybridization and extinction.
To identify key ecological, evolutionary, and genetic factors influencing extinction risk due to hybridization.

Main Methods:

Comprehensive literature survey of studies investigating hybridization and extinction events.
Analysis of identified factors contributing to either destructive or constructive outcomes of hybridization.

Main Results:

Genetic swamping is a more frequent driver of extinction than demographic swamping.
Human activities increase hybridization-related extinction risk, while high reproductive isolation reduces it.
Empirical evidence for climate change exacerbating hybridization-induced extinction risk is limited.
Theoretical potential for genetic rescue via hybridization is not consistently supported by empirical data.

Conclusions:

Extinction risk from hybridization is context-dependent.
Management strategies should prioritize preventing the introduction of hybridization-prone exotic species.
Restoration of mature, biodiverse habitats is crucial for resisting hybrid establishment and mitigating extinction.