The exuperantia gene is required for Drosophila spermatogenesis as well as anteroposterior polarity of the developing oocyte, and encodes overlapping sex-specific transcripts.

Abstract excerpt

The Drosophila gene exuperantia (exu) is a maternal effect gene which is needed for proper localization of the bcd RNA during the formation of oocytes. We have extended the characterization of the exu phenotype and find that the gene functions in the male as well as the female germline. Six of seven exu alleles are male-sterile; mutant defects in spermatogenesis first appear during meiosis. A genetic analysis...

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