Coalescents and Neutral Sampling
نویسنده
چکیده
C a population that is maintained at 2N genes for a large number of generations. Assume that each gene in each generation has a unique parental gene, the parental gene is equally likely to be any of the genes in the preceding generation, and the choices of parents for different genes are independent. Then two genes in the same generation will have the same parent with probability 1/2N and will have different parents with probability 1−1/2N . (This is called the standard Wright-Fisher model.) In general, a sample of r genes from the same generation has r1 ≤ r distinct parents. These r1 parental genes have r2 ≤ r1 distinct parents in the generation that precedes them. In Figure 1.1. Ancestors of a sample of r = 5 genes
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