[Genetic control of spermatogenesis and sex determination in mammals].
The material was analyzed on the main problems of genetics of mammalian spermatogenesis, sex determination, its reversion and other defects from the standpoint of current cytological and molecular-genetic concepts of functional activity of the parental genomes after fertilization and behavior of their chromosomes at the early embroyonic stages. On the basis of this analysis, a hypothesis has been proposed, which explains a high percentage (50% or more) of early embryonic mortality in placental mammals under the conditions of natural and extracorporeal fertilization, as well as regular appearance of defects in the course of natural sex determination, including the appearance of representatives of both sex minorities. We do not make pretense to comprehensive and deep analysis of male gametogenesis and sex determination in mammals.
Kudriavtsev
I V
IV
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071 Russia.
Safronova
L D
LD
Kudriavtsev
P I
PI
D000818:Animals; D006801:Humans; D008297:Male; D008322:Mammals / Q000235:genetics / Q000502:physiology*; D008540:Meiosis; D012730:Sex Chromosomes / Q000235:genetics*; D019849:Sex Determination Processes; D013091:Spermatogenesis / Q000235:genetics*