Insertion of a gypsy element.
The ovaries of ovoD1rv22 females are primarily agametic.
In homozygous mutant germaria, very few egg chambers are found. Those rare egg chambers that are found are small and have no nurse cells.
Homozygous female embryos contain the normal number of germ cells. By the end of the third larval instar stage many homozygous female larvae have a reduced number or no germ cells.
XX females have agametic ovaries. ovoD1rv22/Y pseudofemales (carrying traHsp83.PS) have ovaries that contain large numbers of tumorous egg cysts.
The germ cells of XO ovo[-] males have the crystals characteristic of XO males and are fully populated with male germ cells of all stages.
Cold sensitive eye phenotype. ovo-, svb+ phenotype.
Phenotypic category: lzl-.
Germ cell death occurs during early embryogenesis in homozygotes. Adults have rough or glazed eyes (this phenotype is cold-sensitive).
Gene activity is not detectable. Viable. Male germ line is fertile, female germ line has no vitellogenic egg chambers.
At the non-permissive temperature homozygous females lay no eggs.
ovoD1rv22 have no adverse effect on the development of the germline in XY traF.Hsp83 pseudofemales; the pseudo-ovaries are filled with a multitude of undifferentiated germ cells.
The ovary phenotype of homozygous ovoD1rv22 females is partially suppressed if they are also carrying mle1/mle1, mle9/mle9 or mle1/mle14. The ovary phenotype is of ovoD1rv23/ovoD1rv22 females partially suppressed if they are also carrying mle1/mle1. The phenotype is not affected if the females are also carrying SxlM4 or SxlM1. The phenotype is not affected if the females are also carrying msl-2138/msl-2138 or msl-2138/msl-21. ovoD1rv23/ovoD1rv22; mle9/mle14 ovaries are phenotypically mosaic, containing germ cells of both male and female morphology. The mosaicism can be at the level of whole ovaries or ovarioles. ovoD1rv22/ovoD1rv22; mle1/mle1 ovaries most often contain germ cells of male morphology rather than female morphology. This phenotype is partially suppressed by SxlM1; ovaries more often contain germ cells of female morphology rather than male morphology.
The eye phenotype is partially suppressed by two (but not one) copies of ovoOW10.0.
Revertant.
Severe ovo allele.