male fertile
Homozygous males have morphologically normal testes and are fully fertile.
G38G38, fs(1)Yb72 has male sterile | recessive phenotype
G38G38, fs(1)Yb72 has testis phenotype
G38G38, fs(1)Yb72 has male germline cell phenotype
The testes of fs(1)Yb72 ; G38G38 double homozygous males lose their germline shortly after eclosion and are almost completely sterile.