Human Evolution

, Volume 10, Issue 1, pp 17–33 | Cite as

A genetic affinity analysis of human populations

  • N. Saitou


Genetic affinity of human populations based on allele frequency data was studied from two viewpoints. (1) The effect of the number of polymorphic loci on the reconstruction of a phylogenetic tree of human populations was empirically investigated. Genetic affinity trees were constructed based on data for 1–12 polymorphic loci, by using the neighbor-joining method. Geographical clustering of populations gradually appeared when the number of loci was increased. A new classification and terminology of higher order human population clusters is proposed based on these and other studies. (2) A new method of estimating the absolute divergence time of two populations is proposed, which is based on a diffusion equation that describes random genetic drift.

Key words

genetic polymorphism allele frequency divergence time population genetics 


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Copyright information

© International Institute for the Study of Man 1995

Authors and Affiliations

  • N. Saitou
    • 1
  1. 1.Laboratory of Evolutionary GeneticsNational Institute of GeneticsMishima411Japan

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