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Related Experiment Video

Updated: Oct 11, 2025

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Maternal-Offspring Interactions: Reciprocally Coevolving Social Environments.

Michael J Wade¹

¹Department of Biology, Indiana University, Bloomington, IN 47405, USA.

The Journal of Heredity

|December 1, 2021

Summary

This summary is machine-generated.

Maternal-zygotic gene interactions accelerate adaptive evolution. Co-evolution between maternal and zygotic genotypes drives faster adaptation compared to genotype-by-environment interactions alone.

Keywords:

Price Equation epistasis genotype-by-environment interaction inbreeding indirect genetic effects

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Area of Science:

Evolutionary biology
Population genetics
Genetics

Background:

Maternal-zygotic co-evolution is a key mechanism of indirect genetic effects.
Understanding how these interactions influence evolutionary rates is crucial.

Purpose of the Study:

To investigate the impact of maternal-zygotic gene interactions on evolutionary and adaptive rates.
To compare evolution under genotype-by-environment (G × E) interaction versus genotype-by-maternal environment (G × Gmaternal) interaction.

Main Methods:

Utilized comparably parameterized population genetic models.
Employed the Price Equation to partition changes in mean fitness (∆W).
Compared a 1-locus G × E model with a 2-locus G × Gmaternal model under free recombination.

Main Results:

Both models showed parallels in fitness variance components.
Adaptive evolution was significantly faster in the G × Gmaternal model.
The maternal genetic environment co-evolved with the zygotic phenotype, enhancing adaptation.

Conclusions:

Maternal-zygotic co-evolution accelerates adaptive evolution compared to G × E interactions.
Findings highlight the importance of indirect genetic effects in shaping evolutionary trajectories.
Provides insights into the evolution of genes mediating indirect genetic effects.