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Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.
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Understanding developmental system drift.

Áine McColgan1,2, James DiFrisco1

  • 1Theoretical Biology Lab, The Francis Crick Institute, London NW1 1AT, UK.

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|October 17, 2024
PubMed
Summary
This summary is machine-generated.

Developmental system drift (DSD) is when genes change but traits stay the same. This review explores DSD

Keywords:
Compensatory evolutionDevelopmental system driftEvo-devoGene regulatory networksModel organismsRobustness

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Area of Science:

  • Evolutionary developmental biology
  • Genetics
  • Molecular biology

Background:

  • Developmental system drift (DSD) describes genetic divergence of homologous traits despite conserved phenotypes.
  • DSD is increasingly recognized as a pervasive phenomenon across diverse organisms and developmental processes.
  • Reliance on model organisms in developmental research may lead to errors when extrapolating findings to non-model organisms due to potential DSD.

Purpose of the Study:

  • To review key ideas, evidence, and open problems in the study of Developmental System Drift (DSD).
  • To highlight the implications of DSD for cross-species comparisons in developmental biology.
  • To propose methods for detecting DSD and estimating its frequency.

Main Methods:

  • Literature review of existing studies on DSD.
  • Analysis of data and modeling approaches for DSD detection.
  • Conceptual framework for understanding genetic divergence in relation to phylogenetic distance.

Main Results:

  • Evidence suggests DSD is widespread across various organisms and developmental pathways.
  • Extrapolation of findings from model to non-model organisms is potentially unreliable due to DSD.
  • Existing data and modeling can be leveraged to identify and quantify DSD.

Conclusions:

  • Further study of DSD is crucial for establishing baseline expectations of genetic divergence.
  • Understanding DSD contributes to the broader principles of gene regulatory evolution.
  • Accurate assessment of DSD is essential for robust comparative developmental biology.