retn^z2-428/retn⁰⁵⁰⁹⁶ females exhibit male like courtship behaviours. Mutant females follow, tap and appear to sing. Although not as robust as male courtship - following is not as sustained, full wing extension and vibration is not seen, and copulatory bending is weak or absent - these behaviours resemble courtship. The peak penetrance of these phenotypes is 3-4 weeks post eclosion, averaging 42 courtship events per 5 minute observation period (compared to <3 in controls). male-male and male-female courtship in retn^z2-428/retn⁰⁵⁰⁹⁶ mutant males is comparable to wild-type. retn⁰⁵⁰⁹⁶/retn^z2-428 animals also exhibit mushroom body (MB) specific abnormalities. A subset of MB neurons diverge within the nerve tracks and axons from the posterior part of the β-lobe neurons cross the midline and join with the opposite β-lobe neurons, causing β-lobe fusion. This is more common in females than in males.

Both zygotic and germline clone homozygous embryos have a normal pattern of cuticle structures.

retn^z2-428/retn⁰⁵⁰⁹⁶ has abnormal courtship behavior | female phenotype, non-enhanceable by fru^AJ96u3/fru^4-40

retn^z2-428/retn⁰⁵⁰⁹⁶ has abnormal courtship behavior | female phenotype, non-enhanceable by fru^sat15/fru^4-40

retn^z2-428/retn⁰⁵⁰⁹⁶ has abnormal courtship behavior | female phenotype, non-suppressible by fru^sat15/fru^4-40

retn^z2-428/retn⁰⁵⁰⁹⁶ has abnormal courtship behavior | female phenotype, non-suppressible by fru^AJ96u3/fru^4-40