In msps^MJ208/msps^P mutants, no actin overgrowth is observed, even though 100% of oocytes display aberrant hts RNA localisation. Ectopic actin (often in the form of hollow spheres) accumulates in the cytoplasm of these oocytes.

The nucleus is no longer anteriorly positioned after stage 10 in msps^MJ208/msps^P oocytes. Ooplasmic streaming is severely compromised in stage 11 msps^MJ208/msps^P oocytes.

Microtubules are reduced or absent in the ooplasm of msps^MJ208/msps^P egg chambers. These effects are confined largely to the nurse cells during stages 8-9, but microtubules are absent in nurse cells and oocytes by stage 10B.

Microtubule organisation appears normal in many stage 9 msps^P/msps^MJ208 egg chambers. However, some stage 9 msps^P/msps^MJ208 egg chambers have defects in the microtubule cytoskeleton; microtubule density is often reduced in the nurse cells and oocyte and the remaining microtubules appear disorganised. In addition, whereas in wild-type stage 9 follicle cells the density of microtubules is highest at the basal edge of the cell, this polarity is lost in the mutant follicle cells. In wild-type stage 9 and early stage 10 egg chambers, microtubules are seen associated with and extending through the ring canals that link the nurse cells and the oocyte, and these microtubules fan out and form an extensive array in the nurse cell cytoplasm. These microtubules are reduced in density in msps^P/msps^MJ208 egg chambers and they do not form an obvious array in the nurse cell cytoplasm.

Mutant adults often have a cuticle defect in the abdomen. Mutant females lay eggs that fail to hatch. In mutant females, nearly half of the spindles in non-activated oocytes have lost their bipolarity and instead have tripolar morphology. The spindle size, density of microtubules and pole focusing is not significantly altered. Chromosome alignment is often disrupted, but the pairing of bivalent meiotic chromosomes appears to be maintained. There is no aneuploidy or polyploidy. Bivalent chromosomes are often stretched between the poles but they remain at the equator, whereas 4th chromosomes are closer to the poles, as occurs in wild type.

msps^MJ208/msps[+] is an enhancer of chromosome | embryonic stage | maternal effect phenotype of Df(3L)R-G7/mv^ros

msps^MJ208/msps[+] is an enhancer of centrosome | embryonic stage 4 | maternal effect phenotype of Df(3L)R-G7/mv^ros

msps^MJ208/msps[+] is an enhancer of mitotic spindle | embryonic stage | maternal effect phenotype of Df(3L)R-G7/mv^ros