HIERARCHICAL VERSUS NONHIERARCHICAL PATTERNS OF GENETIC DISTANCES AMONG POPULATIONS - A SIMULATION STUDY

Authors
Citation
Jaf. Diniz, HIERARCHICAL VERSUS NONHIERARCHICAL PATTERNS OF GENETIC DISTANCES AMONG POPULATIONS - A SIMULATION STUDY, Brazilian journal of genetics, 16(3), 1993, pp. 829-839
Citations number
NO
Categorie Soggetti
Genetics & Heredity
Journal title
Brazilian journal of genetics
ISSN journal
01008455 → ACNP
Volume
16
Issue
3
Year of publication
1993
Pages
829 - 839
Database
ISI
SICI code
0100-8455(1993)16:3<829:HVNPOG>2.0.ZU;2-N
Abstract
A simulation study was made of the effects of mixing two evolutionary forces (natural selection and random genetic drift), combined in a sin gle data matrix of gene frequencies, on the resulting genetic distance s among populations. Twenty-one, kinds of simulated gene frequencies s urfaces, for 15 populations linearly distributed over geographic space , were used to construct 21 data matrices, combining different proport ions of two types of surfaces (gradients and random surfaces). These m atrices were analysed by Unweighted Pair-Group Method - Arithmetic Ave rages (UPGMA), clustering and Principal Coordinate Analysis. The resul ts obtained show that ordination is more accurate than UPGMA in reveal ing the spatial patterns in the genetic distances, in comparison with results obtained using the Mantel test comparing directly genetic and geographic distances.