In discussing the population genetics phenomenon of genetic drift,
we present the classical n-coalescent process of Sir J.F.C. Kingman, 
and various contemporary models involving stochastic processes related 
via family ties.

Literature

R. Durret, Probability Models for DNA Sequence Evolution, Springer 2002.
A. Bobrowski, Functional Analysis for Probability and Stochastic Processes,
Cambridge 2005.
W. J. Ewens, Mathematical Population Genetics, Springer 2004.
Kingman, J.F.C., The coalescent, Stoch. Proc. Appl. 13 (1982), 235-248.