Subject: CyO, sp* balancer variant
Subject: CyO, sp* balancer variant
We received stocks from Ting Wu, Harvard University, balanced over a CyO
chromosome marked with an unknown allele of speck. The allele is probably
sp1 rather than a spontaneous sp allele, because the sp-marked CyO was
recognized in stocks where the nonbalancer homologue was marked with sp1.
It likely recombined onto CyO, since sp is distal to the most distal CyO
breakpoint.