[A theoretical analysis of systematic "parents X progeny" inbreeding in animals in the absence of selection].

Theoretical analysis of the structure of a model population of D. melanogaster under systematic inbreeding--"parents x progeny"--has been conducted using a computer and the original method elaborated. Theoretical relationships between the development of homozygous isolated groups of progeny of 30 generations and their backcrosses with heterozygous and homozygous common ancestors A male and B female were established.