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Generational stability of epigenetic transgenerational inheritance facilitates adaptation and evolution
Alexandra Korolenko1, Michael K Skinner1
1Center for Reproductive Biology, School of Biological Sciences, Washington State University, Pullman, WA, USA.
Epigenetics
|August 6, 2024
Summary
Epigenetic inheritance, driven by environmental factors, influences natural selection and evolutionary change. Incorporating epigenetics into evolutionary biology enhances our understanding of adaptation and inheritance across generations.
Area of Science:
- Evolutionary Biology
- Genetics
- Epigenetics
Background:
- Modern evolutionary synthesis lacks inclusion of epigenetics and epigenetic inheritance.
- Environmental factors significantly influence natural selection via epigenetic alterations.
- Epigenetic mechanisms regulate gene expression and are directly modified by the environment.
Purpose of the Study:
- To present evidence for epigenetics and epigenetic inheritance altering phenotypic variation.
- To highlight the role of epigenetics in evolutionary change frequency.
- To integrate transgenerational epigenetic inheritance into evolutionary theory.
Main Methods:
- Review of existing scientific literature on epigenetics and evolution.
- Analysis of studies demonstrating environmental influence on epigenetic modifications.
- Examination of phenotypic variation linked to epigenetic inheritance.
Main Results:
- Epigenetic inheritance can alter phenotypic variation at a higher frequency than genetic change.
- Environmental factors directly impact epigenetic states, influencing evolution.
- Transgenerational epigenetic inheritance plays a crucial role in evolutionary processes.
Conclusions:
- Epigenetics and epigenetic inheritance are critical components of evolutionary biology.
- Integrating molecular (genetics, epigenetics) and biological (environment, adaptation) sciences is essential.
- A comprehensive understanding of evolution requires incorporating epigenetic mechanisms.
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