TABLE 1

Fitness of traS stop mutants

GenotypeFitness
SextradsxMaleFemaleComments
Femaletra+/tra+dsx+/dsx+1Original female
Maledsx+/dsxM1Original male
Femaletra+/traSdsx+/dsx+1 – fLess TRA, worse female
Maledsx+/dsxM1 + mLess TRA, better male
MaletraS/traSdsx+/dsx+1 + m2No TRA, even better male
Maledsx+/dsxM1 + m2No TRA, even better male