An evaluation of genetic distances for use with microsatellite loci.


Journal Article

Mutations of alleles at microsatellite loci tend to result in alleles with repeat scores similar to those of the alleles from which they were derived. Therefore the difference in repeat score between alleles carries information about the amount of time that has passed since they shared a common ancestral allele. This information is ignored by genetic distances based on the infinite alleles model. Here we develop a genetic distance based on the stepwise mutation model that includes allelic repeat score. We adapt earlier treatments of the stepwise mutation model to show analytically that the expectation of this distance is a linear function of time. We then use computer simulations to evaluate the overall reliability of this distance and to compare it with allele sharing and Nei's distance. We find that no distance is uniformly superior for all purposes, but that for phylogenetic reconstruction of taxa that are sufficiently diverged, our new distance is preferable.

Full Text

Cited Authors

  • Goldstein, DB; Ruiz Linares, A; Cavalli-Sforza, LL; Feldman, MW

Published Date

  • January 1995

Published In

Volume / Issue

  • 139 / 1

Start / End Page

  • 463 - 471

PubMed ID

  • 7705647

Pubmed Central ID

  • 7705647

Electronic International Standard Serial Number (EISSN)

  • 1943-2631

International Standard Serial Number (ISSN)

  • 0016-6731


  • eng