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.
Dp(1;Y)BSC106 was generated from C(1;Y)N12, In(1)BSC26 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)BSC106.
Dp(1;Y)BSC106 carries five regions from the X chromosome. Three segments are appended to YS: a distal X segment (1Lt;1B5, X:1Lt ;387562 (R5)), a medial X segment (10F7-11A1;11D1, X:11814681..11900970 ;12797208) and a basal X segment that extends distally from a point in centric heterochromatin distal to bb to a point either in X heterochromatin or in basal euchromatin. An X segment extending proximal from a point between fog and stnA ( X:22228492..22384175 ) to an unknown point in X heterochromatin and a small X segment from 16A carrying B[S] are appended to YL.