41A;59E1-59E2
41A;59D8
bk2 hits bw
Chromosome exhibits position effect variegation for bw. Homozygotes are partially viable. When adult flies do occur they are often deformed: small bristles, small eyes,
Variegation intermediate to slight. Homozygote shows extreme variegation and reduced viability.
Slatis, 16 Nov. 1948.
Limits of break 1 from polytene analysis (FBrf0010226) Limits of break 2 from complementation mapping against bw (FBrf0010226)