Premium
Genetic variation within two linguistic Amerindian groups: Relationship to geography and population size
Author(s) -
CallegariJacques Sidia M.,
Salzano Francisco M.
Publication year - 1989
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330790307
Subject(s) - dendrogram , population , genetic distance , genetic variation , genetic drift , range (aeronautics) , geographical distance , geography , biology , evolutionary biology , demography , genetic diversity , sociology , materials science , composite material
Nine Carib and eight Tupi groups were studied for a minimum of eight common polymorphic systems and compared in terms of genetic distances using the methods of Nei and Edwards. Two levels of genetic information were distinguished, one with a maximum of 20 loci and another with a maximum of 12 loci considered. The dendrograms produced consistent, reproducible results, independent of the method used, when a minimum of ten polymorphic systems were included in the analysis. Irrespective of the number of systems or the method used, the Tupi showed two to three times higher average interpopulation genetic distances than the Carib groups, which may be due to their lower average population sizes, allowing for the action of genetic drift and/or founder effects, as these two sets of populations do not differ significantly in geographic range, years of contact with non‐Indians, or degree of acculturation.