21-days old v1 mutant adults raised at 29[o]C do not show significantly changes in PPL1 neurons, as compared to age-matched controls.
v1 adult heterozygotes as well as homozygotes display significantly slower heartbeat across temperatures ranging from 20[o]C to 37[o]C and the average heartbeat action across temperatures of v1 mutant prepupae is more rhythmic compared to wild-type controls. The number of inter-beat intervals lasting more than 1 sec is not significantly different between v1 mutants of either sex and the controls, although genetic background plays a significant role as v1 mutant males from a line that hasn't been outcrossed show highly increased count of these heart stoppages.
The heartbeat of v1/Df(1)v-L15 males is significantly more rhythmic relative to control males at 37[o]C and also on average across temperatures.
Ocelli are unpigmented. v1 blocks the pigmentation of rc2 flies.
Trace amounts of wild type sized transcripts present in mutants (Searles et al., 1990).
v1 eye discs develop wild-type pigmentation when transplanted into wild-type larvae.
Non-autonomous in v+//v1 gynandromorphs.
Eye colour: bright red. Eye colour: white, with bw1. Ocellus colour: colourless.