TY - JOUR
T1 - Kin selection, social structure, gene flow, and the evolution of chimpanzees
AU - Morin, Phillip A.
AU - Moore, James J.
AU - Chakraborty, Ranajit
AU - Jin, Li
AU - Goodall, Jane
AU - Woodruff, David S.
PY - 1994/8/26
Y1 - 1994/8/26
N2 - Hypotheses about chimpanzee social behavior, phylogeography, and evolution were evaluated by noninvasive genotyping of free-ranging individuals from 20 African sites. Degrees of relatedness among individuals in one community were inferred from allele-sharing at eight nuclear simple sequence repeat (SSR) loci. Males are related on the order of half-siblings, and homozygosity is significantly increased at several SSR loci compared to Hardy-Weinberg expectations. These data support the kin-selection hypothesis for the evolution of cooperation among males. Sequence variation patterns at two mitochondrial loci indicate historically high long-distance gene flow and clarity the relationships among three allopatric subspecies. The unexpectedly large genetic distance between the western subspecies, Pan troglodytes verus, and the other two subspecies suggests a divergence time of about 1.58 million years. This result, if confirmed at nuclear loci and supported by eco-behavioral data, implies that P. t. versus should be elevated to full species rank.
AB - Hypotheses about chimpanzee social behavior, phylogeography, and evolution were evaluated by noninvasive genotyping of free-ranging individuals from 20 African sites. Degrees of relatedness among individuals in one community were inferred from allele-sharing at eight nuclear simple sequence repeat (SSR) loci. Males are related on the order of half-siblings, and homozygosity is significantly increased at several SSR loci compared to Hardy-Weinberg expectations. These data support the kin-selection hypothesis for the evolution of cooperation among males. Sequence variation patterns at two mitochondrial loci indicate historically high long-distance gene flow and clarity the relationships among three allopatric subspecies. The unexpectedly large genetic distance between the western subspecies, Pan troglodytes verus, and the other two subspecies suggests a divergence time of about 1.58 million years. This result, if confirmed at nuclear loci and supported by eco-behavioral data, implies that P. t. versus should be elevated to full species rank.
UR - http://www.scopus.com/inward/record.url?scp=0028128340&partnerID=8YFLogxK
U2 - 10.1126/science.7915048
DO - 10.1126/science.7915048
M3 - Article
C2 - 7915048
AN - SCOPUS:0028128340
SN - 0036-8075
VL - 265
SP - 1193
EP - 1201
JO - Science
JF - Science
IS - 5176
ER -