Genes regulating testis size.

C Chubb

doi:10.1095/biolreprod47.1.29

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Genes regulating testis size.

C Chubb

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Abstract

The studies described here provide information about the genetic and morphological bases for the significant differences in testis size among three closely related C57BL mouse substrains: C57BL/6J, C57BL/6ByJ, and C57BL/10J. C57BL/6J mice have normal-size testes while the other two substrains have small-size testes. Genes controlling testis size are postulated to be among the estimated forty genes that differ between the C57BL/6J and C57BL/6ByJ substrains. The number of genes involved in testis size regulation was examined using recombinant inbred mouse strains. An investigation of the role of Y chromosome genes was performed by completing molecular analyses with a mouse Y chromosome-specific probe. Sertoli and germ cell counts provided insight into the morphological basis for the different testis sizes. The experimental results suggest that there are at least two autosomal testis-size genes and that they control testis size by regulating the number of Sertoli cells.

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Animals Cell Count Epididymis Genes, Regulator Male Mice Mice, Inbred C57BL Organ Size Seminal Vesicles Seminiferous Tubules Sertoli Cells Spermatogenesis Testis Y Chromosome Journal Article Research Support, U.S. Gov't, P.H.S.

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C Chubb. 1992. Genes regulating testis size.. https://doi.org/10.1095/biolreprod47.1.29

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