Journal of the Anthropological Society of Nippon
Online ISSN : 1884-765X
Print ISSN : 0003-5505
On the Effect of the Fluctuating Population Size on the Age of a Mutant Gene
Naruya SAITOUHiromu SHIMIZUKeiichi OMOTO
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1988 Volume 96 Issue 4 Pages 449-458

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Abstract

The age of a mutant gene was studied under various cases of population size fluctuation. A Monte Carlo method was used to simulate a branching process under the assumption that the probability distribution of descendant gene numbers follows a Poisson distribution. It is shown that a population with a constant population size tend to have larger age of a mutant gene than populations in which the size is fluctuating. It was also shown that for a Negrito population of Luzon Island, the observed distribu tion of gene transmission estimated through pedigree data agrees well with a Poisson distribution.

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