[];[]
This chromosome consists of three X chromosome segments appended to the end of YL: a segment from 1Lt to the distal breakpoint of In(1)sc7 within the achaete-scute complex in 1B, a medial segment extending distally from the 6D8 breakpoint of In(1)sc7, and a segment of centric heterochromatin (FBrf0109188). The distal X segment carries a wild-type allele of y, which enables one to follow the chromosome in crosses. The chromosomes were isolated in a manner similar to the Dp(1;Y)BSC chromosomes described in FBrf0212582 using In(1)sc7 and C(1;Y)6 as progenitor chromosomes.
Stated to be lost.
A. Schalet.
Inferred cytology: Duplicated for 5A7--5C2;6D8.