Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Speciation Rates01:07

Speciation Rates

23.6K
Overview
23.6K
Formation of Species01:31

Formation of Species

47.0K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
47.0K
Genetics of Speciation02:16

Genetics of Speciation

23.4K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
23.4K
Genetic Drift03:33

Genetic Drift

45.4K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
45.4K
What is a Species?01:17

What is a Species?

52.2K
Overview
52.2K
Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

7.4K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
7.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An in vivo parallelized reporter assay to uncover tissue-specific splicing regulatory sequences in a multicellular animal.

Nucleic acids research·2026
Same author

Global genomic diversity of the selfing nematode <i>Caenorhabditis tropicalis</i> correlates with geography.

bioRxiv : the preprint server for biology·2026
Same author

<i>Caenorhabditis briggsae</i> ancestral genomic hyper-diversity contrasts with globally distributed genome-wide haplotypes.

bioRxiv : the preprint server for biology·2025
Same author

Conserved Gene Expression Plasticity in Development Is More Pervasive Than Expression Divergence Between Species of Caenorhabditis Nematodes.

Evolution & development·2025
Same author

Phylogenomic timetree-calibrated speciation clocks for Caenorhabditis nematodes reveal slow but disproportionate accumulation of post-zygotic reproductive isolation.

PLoS genetics·2025
Same author

Divergent organelle allocation in the evolution of sperm gigantism revealed from subcellular quantification of nematode sperm with electron microscopy.

Evolution; international journal of organic evolution·2025
Same journal

Isolation and Connectivity: Population Structure of an Ectomycorrhizal Truffle in the Fragmented Mountain Landscape of the Madrean Sky Island Archipelago.

Molecular ecology·2026
Same journal

Refugia, but Not for Everyone: Genetic Structure Differentiates Shallow and Mesophotic Populations of the Brooder Sponge Ircinia variabilis.

Molecular ecology·2026
Same journal

Leafcutter Ant Farmers Prevent Loss of Edible Symbiotic Structures by Maintaining Allelic Diversity in Their Multinucleate Fungal Crop.

Molecular ecology·2026
Same journal

Resolving Emergent Patterns in Community Genetics With Environmental DNA.

Molecular ecology·2026
Same journal

Genomic Offsets Predict Survival With Low Accuracy in a Marine Common Garden.

Molecular ecology·2026
Same journal

Differential Immune Responses Correlate With Chytridiomycosis Severity in Italian Crested Newts.

Molecular ecology·2026
See all related articles

Related Experiment Video

Updated: Apr 15, 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

1.4K

Repeatability, ephemerality and inconvenient truths in the speciation process.

Asher D Cutter1

  • 1Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada.

Molecular Ecology
|April 9, 2015
PubMed
Summary
This summary is machine-generated.

Genetic variation within species significantly impacts hybridization outcomes during secondary contact. The study on Catostomus suckers reveals imperfect repeatability in hybridization, suggesting species barriers can be more permeable than previously assumed.

Keywords:
FishHybridizationInvasive SpeciesLandscape GeneticsPopulation Genetics - EmpiricalSpeciation

More Related Videos

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae
05:39

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Published on: December 2, 2022

3.4K
Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

4.7K

Related Experiment Videos

Last Updated: Apr 15, 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

1.4K
Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae
05:39

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Published on: December 2, 2022

3.4K
Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

4.7K

Area of Science:

  • Evolutionary Biology
  • Speciation Genetics
  • Population Genetics

Background:

  • Traditional speciation models often simplify populations to single panmictic units.
  • Focus on fixed genetic differences between populations overlooks within-species variation's role in reproductive isolation.

Purpose of the Study:

  • Investigate how within-species genetic variation at incompatibility loci influences interspecies hybridization.
  • Assess the repeatability of genomic outcomes in natural hybridization events across distinct secondary contacts.

Main Methods:

  • Studied five sympatric species of suckers (genus Catostomus) across different river systems.
  • Analyzed genomic data to document realized hybridization patterns and heterogeneity.

Main Results:

  • Observed substantial genomic heterogeneity in hybridization, varying among species pairs.
  • Found significant differences in hybridization outcomes even for the same species pair across different locations.

Conclusions:

  • Hybridization repeatability is imperfect, indicating variable species barrier permeability.
  • Within-species genetic variation can lead to unpredictable speciation outcomes and challenge species integrity.