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

Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.4K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.4K
Genetic Drift03:33

Genetic Drift

39.7K
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.
39.7K
Genetics of Speciation02:16

Genetics of Speciation

19.2K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.2K
Gene Flow02:39

Gene Flow

35.1K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.1K
What is Population Genetics?01:25

What is Population Genetics?

57.9K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
57.9K
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

8.0K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
8.0K

You might also read

Related Articles

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

Sort by
Same author

Correction to: 'Dolphin social phenotypes vary in response to food availability but not the North Atlantic Oscillation index' (2023), by Fisher and Cheney.

Proceedings. Biological sciences·2025
Same author

Same data, different analysts: variation in effect sizes due to analytical decisions in ecology and evolutionary biology.

BMC biology·2025
Same author

Measuring the effect of RFID and marker recognition tags on cockroach (Blattodea: Blaberidae) behavior using AI-aided tracking.

Journal of insect science (Online)·2025
Same author

Exploring changes in social spider DNA methylation profiles in all cytosine contexts following infection.

Heredity·2024
Same author

Dolphin social phenotypes vary in response to food availability but not the North Atlantic Oscillation index.

Proceedings. Biological sciences·2023
Same author

When Do We Start Caring About Insect Welfare?

Neotropical entomology·2023

Related Experiment Video

Updated: Jul 1, 2025

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

962

Indirect genetic effects should make group size more evolvable than expected.

David N Fisher1

  • 1School of Biological Sciences, University of Aberdeen, King's College, Aberdeen, AB24 3FX, United Kingdom.

Journal of Evolutionary Biology
|March 7, 2024
PubMed
Summary

Group size evolution is a puzzle because it's a group trait. New models show indirect genetic effects double genetic variance and speed up evolution, explaining rapid group size changes.

Keywords:
evolvabilitygroup sizeindirect genetic effectsjoint phenotypes

More Related Videos

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

3.3K
Quantifying Fitness Costs in Transgenic Aedes aegypti Mosquitoes
09:41

Quantifying Fitness Costs in Transgenic Aedes aegypti Mosquitoes

Published on: September 15, 2023

812

Related Experiment Videos

Last Updated: Jul 1, 2025

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

962
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

3.3K
Quantifying Fitness Costs in Transgenic Aedes aegypti Mosquitoes
09:41

Quantifying Fitness Costs in Transgenic Aedes aegypti Mosquitoes

Published on: September 15, 2023

812

Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Quantitative genetics

Background:

  • Group size is a crucial trait influencing ecological and evolutionary dynamics.
  • Understanding the genetic basis of group size is challenging as it is a social, not individual, phenotype.
  • Existing models may underestimate the evolutionary potential of group size due to its complex genetic architecture.

Purpose of the Study:

  • To propose a conceptual framework for modeling group size as a joint phenotype.
  • To elucidate the role of indirect genetic effects in the evolution of group size.
  • To predict the evolutionary trajectory and speed of group size changes.

Main Methods:

  • Modeling group size as a joint phenotype influenced by multiple genomes.
  • Incorporating indirect genetic effects into evolutionary models.
  • Analyzing the direct and indirect genetic contributions to group size variance.

Main Results:

  • Group size exhibits greater genetic variance than previously assumed.
  • Indirect genetic effects contribute equally to direct genetic effects on group size.
  • The correlation between direct and indirect genetic effects is maximized (1), accelerating evolutionary response.

Conclusions:

  • Models accounting for indirect genetic effects are essential for understanding group size evolution.
  • Group size is expected to evolve rapidly, showing swift increases and decreases.
  • This framework provides new insights into the evolutionary dynamics of social traits.