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Is Yq11 the main critical segment in balanced Y;autosome translocations? 1992

H Rivera, and L Diaz-Castaños
División de Genética, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco.

Balanced Y;Autosome translocations seem to be associated with male infertility whenever the Y breakpoint is located into Yq11 (where the azoospermia factor maps) or near its boundaries. By analogy with the effect on female carriers' fertility of balanced X;Autosome translocations, the band Yq11 emerges as the critical segment. This hypothesis implies that the subjacent mechanism is an impaired expression of the azoospermia factor--either through its physical disruption or via a position effect--rather than a disorder of the sex bivalent inactivation during prophase I.

UI MeSH Term Description Entries
D007248 Infertility, Male The inability of the male to effect FERTILIZATION of an OVUM after a specified period of unprotected intercourse. Male sterility is permanent infertility. Sterility, Male,Sub-Fertility, Male,Subfertility, Male,Male Infertility,Male Sterility,Male Sub-Fertility,Male Subfertility,Sub Fertility, Male
D008297 Male Males
D008957 Models, Genetic Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. Genetic Models,Genetic Model,Model, Genetic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014178 Translocation, Genetic A type of chromosome aberration characterized by CHROMOSOME BREAKAGE and transfer of the broken-off portion to another location, often to a different chromosome. Chromosomal Translocation,Translocation, Chromosomal,Chromosomal Translocations,Genetic Translocation,Genetic Translocations,Translocations, Chromosomal,Translocations, Genetic
D014998 Y Chromosome The male sex chromosome, being the differential sex chromosome carried by half the male gametes and none of the female gametes in humans and in some other male-heterogametic species in which the homologue of the X chromosome has been retained. Chromosome, Y,Chromosomes, Y,Y Chromosomes

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