Produces a shortened transcript.
gonad | embryonic stage (with dsx1)
P1 neurons are present in both XX and XY dsx23/Df(3R)dsx15 animals (these neurons are normally only found in male brains in the wild type).
dsx23 mutants appear intersexual externally. Mutant males exhibit a decrease in male-specific serotonergic neurons, while females display ectopic serotonergic neurons. These neurons are differentially patterned depending on the sex of the mutant. In dsx23 females, a single cluster of three to four serotonergic neurons develops either ventrally or dorsally. In males, both clusters develop but contain 50% fewer neurons than wild-type males.
Both the male and female genital primordia develop in XX genital discs.
XY males show courtship sluggishness when compared to wild type siblings. Aging does not improve the courtship performance. Song pulses are similar to those of dsx+ males, though number and duration of song bouts are much reduced. No sine-song bouts whatsoever are generated by dsx mutants. In elicitation and rejection tests, dsx haplo-X mutants demonstrate an attractiveness that cannot be explained by general enfeeblement, such as inability to reject courtship advances.
XX dsx23/Df(3R)dsx15 flies do not show any male-specific courtship when paired with mature virgin females. 100% of XY dsx23/Df(3R)dsx15 flies show male-specific courtship when paired with mature virgin females. XY dsx23/Df(3R)dsx15 flies have a reduced courtship index (compared to control males) when paired with immature male flies. XY dsx23/Df(3R)dsx15 flies have an essentially normal courtship song compared to control XY flies.
Sex specific neuroblasts fail to undergo any postembryonic divisions in male or female larval nervous systems.
Dorsal musculature does not undergo sexual transformation.
When crossed to Df(3R)dsx2D progeny are viable and display the dsx phenotype.
Homozygotes are intersexual. Adults have roughened eyes and deformed legs.
Revertant.
Rank order for subnormal courtship in dsx alleles is dsx1 < dsx16 < dsx15 < dsx23.