Amino acid replacement: T40A.
mtrmT40A.UASp/Scer\GAL4VP16.nanos.UTR fails to rescue mtrm126
Expression of mtrmS124A.Scer\UAS.P\T under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 does not rescue the high level of achiasmate X and 4th chromosome nondisjunction seen in mtrm126/+ females.