A program that simulates random genetic drift, random mating, recombin
ation, natural selection, and mutation process was developed to study
the influence of these processes on the evolutionary dynamics of haplo
type frequencies in populations. The program can track nine sites, eac
h including up to 15 alleles. The program application was illustrated
by the study of frequency dynamics in the HOXB haplotypes (17q) in dif
ferent populations. The simulation results confirmed the hypothesis, w
hich was proposed on the basis of the experimental data, that, in the
absence of recurrent mutations, population mixing, and natural selecti
on, the harmonic mean of the effective population size from the moment
of New World colonization up to now was more than 1000.