Amino acid replacement: S124A.
UASp regulatory sequences drive expression of a mutated form of mtrm.
Scer\GAL4VP16.nanos.UTR/mtrmS124A.UASp rescues mtrm126
Expression of mtrmS124A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 rescues the high level of achiasmate X and 4th chromosome nondisjunction seen in mtrm126/+ females.