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Related Experiment Video

Updated: May 27, 2026

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark

Published on: January 26, 2018

Epigenetics and brain evolution.

Eric B Keverne¹

¹Sub-Department of Animal Behavior, University of Cambridge, Madingley, Cambridge CB23 8AA, UK. bk10@cam.ac.uk

|November 30, 2011

Summary

This summary is machine-generated.

Epigenetic regulation of imprinted genes, driven by placental development, influences mammalian brain evolution and maternal care. Genetic changes between humans and monkeys are minimal, suggesting epigenetics drives cortical expansion.

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Area of Science:

Evolutionary biology
Neuroscience
Genetics

Background:

Mammalian brain evolution is linked to viviparity and placental development.
Epigenetic regulation of imprinted genes plays a crucial role in maternal-placental-fetal interactions.
Transgenerational co-adaptation ensures maternal care and nurturing behaviors.

Purpose of the Study:

To investigate the role of epigenetics in mammalian neocortical evolution.
To compare genetic and epigenetic factors in human, monkey, rat, and mouse brain evolution.
To understand the evolutionary divergence of brain structures.

Main Methods:

Comparative genomics analysis of human, monkey, rat, and mouse lineages.
Examination of synonymous sequence divergence across species.
Analysis of encephalization trends and neocortical expansion.

Main Results:

Few genetic changes are observed between monkey and human neocortical evolution.
Synonymous sequence divergence in rats and mice is double that of humans and monkeys.
Despite similar divergence times, human neocortex is three times larger than monkey's, while rat and mouse encephalization is similar.

Conclusions:

Genetic stability between human and monkey brains suggests a significant role for epigenetics in adaptable variability.
Epigenetic mechanisms, particularly those involving imprinted genes and placental signaling, are key drivers of advanced brain evolution.
Further research into epigenetic regulation is crucial for understanding species-specific brain development and evolution.