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Related Concept Videos

Gene Conversion02:08

Gene Conversion

Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
Gene Conversion02:08

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Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
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Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.The genetics of speciation involves the different traits or isolating mechanisms preventing gene exchange, leading to reproductive isolation. Reproductive isolation can be due to reproductive barriers that have effects either before or after the formation of a zygote. Pre-zygotic mechanisms prevent fertilization from occurring, and post-zygotic mechanisms...
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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.Gene flow and natural selection are evolutionary mechanisms that shape the outcome of a hybrid zone. Gene flow...
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Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

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Related Experiment Video

Updated: Jun 25, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Evolution: replacing genes and traits through hybridization.

Loren H Rieseberg1

  • 1Department of Botany, University of British Columbia, Vancouver, BC, Canada. lriesebe@interchange.ubc.ca

Current Biology : CB
|February 13, 2009
PubMed
Summary
This summary is machine-generated.

Hybridization, the mixing of species, is more common than previously thought. This genetic exchange can help populations recover lost traits and repair damaged genes by incorporating beneficial alleles from related species.

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Molecular Evolution of the Tre Recombinase
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Molecular Evolution of the Tre Recombinase

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Last Updated: Jun 25, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Published on: February 3, 2023

Molecular Evolution of the Tre Recombinase
12:02

Molecular Evolution of the Tre Recombinase

Published on: May 29, 2008

Area of Science:

  • Evolutionary biology
  • Genetics
  • Population genetics

Background:

  • The significance of hybridization in evolutionary processes has been a long-standing debate.
  • Historically, hybridization was often viewed as a rare or aberrant phenomenon.

Purpose of the Study:

  • To investigate the frequency and evolutionary implications of hybridization in natural populations.
  • To explore the potential of hybridization as a mechanism for trait recovery and genetic repair.

Main Methods:

  • Analysis of molecular genetic data from natural populations.
  • Comparative genomic studies to identify gene flow between species.

Main Results:

  • Molecular genetic evidence reveals that hybridization occurs frequently in natural settings.
  • Hybridization facilitates the acquisition of lost traits and the replacement of deleterious alleles with functional ones from related species.

Conclusions:

  • Hybridization plays a more significant role in evolution than traditionally recognized.
  • It serves as a vital mechanism for genetic rescue and adaptation in natural populations.