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Evolutionary trees and admixture: phylogenetic inference when some populations are hybridized
Author(s) -
LATHROP G. M.
Publication year - 1982
Publication title -
annals of human genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.537
H-Index - 77
eISSN - 1469-1809
pISSN - 0003-4800
DOI - 10.1111/j.1469-1809.1982.tb00716.x
Subject(s) - phylogenetic tree , divergence (linguistics) , inference , hierarchy , maximum likelihood , evolutionary biology , biology , goodness of fit , tree (set theory) , statistics , mathematics , gene , genetics , computer science , combinatorics , artificial intelligence , linguistics , philosophy , economics , market economy
SUMMARY 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.