Only 1.46% of eggs derived from Klp3Amei-352/Klp3A6 females hatch. The majority of embryos derived from homozygous or Klp3Amei-352/Klp3A6 females appear to arrest very early, with only one small nucleus plus a mass of polar body chromatin. The total meiotic exchange frequency for chromosome arm 2L shows little deviation from that of wild-type for Klp3A6/Df(1)ED6579 females, but the distribution of exchanges along the chromosome arm is altered.
Heterozygotes with Df(1)63e4 are viable but female sterile (exhibit a maternal effect lethal egg phenotype) and male semi-sterile. Hemizygous males exhibit low fertility, well over half of the males are completely sterile, the remainder exhibit variable fertility.