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Related Experiment Video

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Effective population size of current human population.

Leeyoung Park1

  • 1Natural Science Research Institute, Yonsei University, 134 Shinchon-Dong, Seodaemun-Ku, Seoul 120-749, Korea.

Genetics Research
|April 1, 2011
PubMed
Summary

This study estimates human effective population size (Ne) using linkage equilibrium and Hardy-Weinberg equilibrium deviations. Results suggest Ne has fluctuated, aligning with recent human population growth.

Area of Science:

  • Population Genetics
  • Human Evolution

Background:

  • Estimating human effective population size (Ne) is crucial for understanding population dynamics.
  • Previous methods for Ne estimation have limitations, especially when Ne fluctuates.

Purpose of the Study:

  • To develop and apply two novel methods for estimating current human effective population size (Ne).
  • To investigate recent fluctuations in human Ne by comparing estimates from different genetic principles.

Main Methods:

  • Utilized two novel approaches derived from established methods: deviation from linkage equilibrium (LE) and deviation from Hardy-Weinberg equilibrium (HWE).
  • Applied these methods to HapMap Phase III data for various human populations.

Main Results:

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  • Estimates for effective population size (Ne) varied significantly, ranging from 622 to 10,437 across populations.
  • Discrepancies between LE and HWE-based estimates indicated Ne fluctuations.
  • The derived Ne estimates generally aligned with observed increases in recent human populations.

    • Conclusions:

    • The effective population size (Ne) of humans has likely fluctuated over time.
    • The developed methods provide valuable insights into recent demographic changes in human populations.
    • Comparing Ne estimates from LE and HWE deviations is a robust approach to detect demographic history.