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Abstract
The genetic control of mammalian gametogenesis is
inadequately characterized due a lack of mutations causing
infertility. To further the discovery of the genes
required for mammalian gametogenesis, phenotype-driven
screens were performed in mice, using random chemical
mutagenesis of whole animals and ES cells. Eleven initial
mutations are reported here that affect proliferation of
germ cells, meiosis, spermiogenesis, and spermiation.
Nine have been mapped genetically. These preliminary
studies provide baselines for estimating the number of
genes required for gametogenesis, and offer guidance in
conducting new genetic screens that will accelerate and
optimize mutant discovery. This report demonstrates the
efficacy and expediency of mutagenesis to identify new
genes required for mammalian gamete development.
Key words:
Gametogenesis
Meiosis
Oocyte development
Spermatid
Spermatogenesis
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