Amino acid replacement: Q1643term.
C9237919T
Q1644term | mxc-PA; Q1644term | mxc-PB
Q1643term
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
decreased fecundity | female (with mxc1)
decreased fecundity | female (with mxcG43)
decreased fecundity | female (with mxcG48)
decreased fecundity | female (with mxcSO)
Hemizygous larvae have overgrown lymph glands.
mxcG9/mxcG46 females have fewer egg chambers than wild-type flies, but are fully fertile and fecund. mxcM1/mxcG46 females lay many small eggs with a thin chorion and small dorsal appendages that collapse after oviposition. Homozygous females lay very few eggs. Some egg chambers contain the normal number of nurse cells, but oogenesis appears arrested before stage 7-8. Egg chambers degenerate in older flies. mxcG46/mxcSO, mxcG46/mxc1, mxcG46/mxc22a-6 and mxcG46/mxc16a-1 females do not lay eggs. Some egg chambers contain the normal number of nurse cells, but oogenesis appears arrested before stage 7-8. Egg chambers degenerate in older flies. mxcG46/mxc22a-6 females have reduced viability. mxcG46/Df(1)10-70d and mxcG46/mxcG48 females have reduced viability, rudimentary gonads and do not lay eggs. The sheaths of the somatic cells that organise the ovarioles are still present and all structures derived from genital imaginal disc appear similar to wild-type. mxcG46/mxcG43 females have rudimentary gonads and do not lay eggs. The sheaths of the somatic cells that organise the ovarioles are still present and all structures derived from genital imaginal disc appear similar to wild-type. Hemizygous males have slightly shorter and thinner testes than wild-type. Sperm are usually immobile or absent, and paragonia are reduced compared to wild-type.
Dfd1, mxcG46 has adult head phenotype
The alleles of mxc form a series. From weakest phenotype to strongest phenotype: mxcG9 < mxcM1 < mxcG46 < mxcG43 < mxcSO < mxc1 < mxcG48.
Germline clonal analysis and pole cell transplantation indicates that mxc+ function is required autonomously in the female germline.