Fearnhead, Paul (2002) The common ancestor at a non-neutral locus. Journal of Applied Probability, 39 (1). pp. 38-54.Full text not available from this repository.
We consider a nonneutral population genetics model with parent-independent mutations and two selective classes. We calculate the stationary distribution of the type of the common ancestor of a sample of genes from this model. The expected fitness of any ancestor (including the most recent common ancestor of any sample) is shown to be greater than the expected fitness of a randomly chosen gene from the population. The process of mutations to the common ancestor is also analysed. Our results are related to, but more general than, results obtained from diffusion theory.
|Journal or Publication Title:||Journal of Applied Probability|
|Uncontrolled Keywords:||Ancestral selection graph ; common ancestor ; fitness ; fixation ; parent-independent mutations|
|Subjects:||Q Science > QA Mathematics|
|Departments:||Faculty of Science and Technology > Mathematics and Statistics|
|Deposited On:||14 Nov 2008 15:54|
|Last Modified:||24 Sep 2016 01:04|
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