Genotype dynamics in populations with breeding pairs

A new model of pair fecundity is proposed for populations with breeding pairs. The model is based upon the assumption of strong predominance of male gamete production over female. Corresponding equations for genotype dynamics are derived. It is established that the usual equation for allele frequency dynamics in panmictic populations cannot be applied to the considered system. In spite of accidental pair formation and accidental gametic fusion within each pair, gamete panmixia of the population as a whole is violated and gene dynamics should be described by means of genotype frequencies. The condition of reduction to the “classical” dynamics is achieved.