Detecting small amounts of gene flow from phylogenies of alleles. | Zendy

Montgomery Slatkin | Zendy

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Detecting small amounts of gene flow from phylogenies of alleles.

Author(s) -

Montgomery Slatkin

Publication year - 1989

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/121.3.609

Subject(s) - concordance , biology , gene flow , genetics , allele , mitochondrial dna , population , gene , evolutionary biology , population genetics , allele frequency , genetic variation , demography , sociology

The method of coalescents is used to find the probability that none of the ancestors of alleles sampled from a population are immigrants. If that is the case for samples from two or more populations, then there would be concordance between the phylogenies of those alleles and the geographic locations from which they are drawn. This type of concordance has been found in several studies of mitochondrial DNA from natural populations. It is shown that if the number of sequences sampled from each population is reasonably large (10 or more), then this type of concordance suggests that the average number of individuals migrating between populations is likely to be relatively small (Nm less than 1) but the possibility of occasional migrants cannot be excluded. The method is applied to the data of E. Bermingham and J. C. Avise on mtDNA from the bowfin, Amia calva.

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