After generating all the Dp(1;Y)BSC chromosomes as described in FBrf0212582, we calculated the minimal euchromatic coverage of the X chromosome provided by these duplications as 97.0%.
Series of Dp(1;Y) stocks carrying segments of the X chromosome on the tip of Y chromosome; in an isogenic background. At the time of publication (FBrf0212582), the Dp(1;Y) collection provided a minimum of 78% coverage with duplication breakpoints spaced a median of nine genes apart.
This is 1Lt, not an induced breakpoint.
Dp(1;Y)BSC344 was generated from C(1;Y)N12, In(1)BSC28 by a large deletion. The proximal deletion breakpoint fell between X:22366703 (20F3, Release 5) and h28--h29. Consequently, no basal euchromatic genes distal to stnA are present on Dp(1;Y)BSC344.