Evolutionary trees and admixture: phylogenetic inference when some populations are hybridized

Ann Hum Genet. 1982 Jul;46(3):245-55. doi: 10.1111/j.1469-1809.1982.tb00716.x.


Maximum likelihood estimation of admixture parameters and divergence times for an evolutionary tree in which some populations may be hybridized is developed. A test of treeness against the alternative of hybridization using a hierarchy of admixture models is proposed as an adjunct to the goodness-of-fit test suggested by Cavalli-Sforza & Piazza (1975). The method is illustrated by an application to gene frequency data from Makiritare Indian villages in southern Venezuela.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Gene Frequency
  • Humans
  • Hybridization, Genetic*
  • Indians, South American
  • Models, Genetic*
  • Phylogeny*
  • Venezuela