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Adding 'epi-' to behaviour genetics: implications for animal domestication.

Per Jensen1

  • 1Linköping University, IFM Biology, AVIAN Behaviour Genomics and Physiology Group, 58183 Linköping, Sweden perje@ifm.liu.se.

The Journal of Experimental Biology
|January 9, 2015
PubMed
Summary
This summary is machine-generated.

Epigenetics, the study of gene expression changes not caused by DNA sequence alterations, offers new insights into animal domestication. Environmental factors can induce heritable epigenetic changes, impacting behavior across generations.

Keywords:
EpigeneticsGene expressionMethylationTransgenerational effects

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Area of Science:

  • Behavioral genetics
  • Evolutionary biology
  • Epigenetics

Background:

  • Domestication involves rapid evolutionary changes driven by selection pressures.
  • Behavior is a key phenotype, mediating responses to environmental challenges.
  • Understanding genetic control of behavior is crucial for domestication studies.

Purpose of the Study:

  • To explore how epigenetics can enhance the understanding of domestication.
  • To review evidence for genetic and epigenetic involvement in behavioral evolution.
  • To highlight the role of epigenetics in mediating environmental influences on behavior.

Main Methods:

  • Review of existing literature on behavior genetics and epigenetics.
  • Analysis of studies on gene expression patterns during domestication.
  • Examination of research on epigenetic modifications (e.g., methylation) and their effects.

Main Results:

  • Behavioral evolution is strongly correlated with changes in gene expression patterns.
  • Epigenetic mechanisms, such as DNA methylation, regulate gene expression timing and extent.
  • Environmental factors (e.g., stress) can alter epigenetic marks, influencing behavior.
  • Acquired epigenetic modifications can be inherited, leading to trans-generational effects on behavior.

Conclusions:

  • Epigenetics provides a new paradigm for understanding heritable variation in behavior.
  • Environmental signals can induce genomic modifications, complementing DNA mutations.
  • Integrating epigenetics with behavior genetics is essential for a comprehensive view of domestication.