Article,

The age of a mutation in a general coalescent tree

, and .
Stochastic Models, 14 (1-2): 273--295 (1998)
DOI: 10.1080/15326349808807471

Abstract

Kimura and Ohta showed that the expected age of a neutral muta- tion observed t o be offrequency x in a population is -2a:(1-2)-' log x. We put this classical result in a general coalescent process context that allows questions t o be asked about mutations in a sample, as well as in the population. In t h e general context the population size may vary back in time. Assuming an infinitely-many-sites model of mutation, we find the distribution of the number of mutant genes a t a particular site in a sample; the probability that an allele a t that site of a given frequency is ancestral; the distribution of the age of a mutation given its frequency in a sample, or population; and the distribution of the time t o the most recent common ancestor, given the frequency of a mutation in a sample, or in the population.

Tags

Users

  • @peter.ralph

Comments and Reviews