Causes a significant shift in the pseudo-ovary phenotype: over 75% of otu10/Y pseudofemales carrying the construct had gonads with tumorous egg chambers, compared to 90% agametic gonads in otu10/Y.
otu10 homozygotes and otu1/Df(1)otu-PΔ1 transheterozygotes carrying otu98.hs have relatively large ovaries containing many tumorous egg chambers.
The expression of the 98kD otu isoform alone can restore XY germ cell proliferation in agametic otu mutant pseudofemales.