Females exhibit segment spanning muscles in the fifth abdominal segment indicative of a transformation to the male specific phenotype. Somatic development of males is unaffected.
Homozygous XX flies are transformed into male-like animals.
XX tra21/tra2B ; bonS043420/bonS043420 animals, that are genetically female (XX) but phenotypically male are viable.
traF.Hsp83 is unable to feminise the soma of XY or XX tra21/Df(2R)trix animals. In both cases, the external morphology of the flies is male-like. In the XY flies, the overall morphology of the gonad is male-like, but they are sterile.
Homozygous XX flies have no Yp1, Yp2 or Yp3 proteins in the haemolymph.
Germ line clonal analysis and pole cell transplantation experiments show that tra2 function is not required in the germ line for the normal development of germ cells according to their chromosomal sex.