Subject: Re: Df(3L)XG9 All Df(3L)XG chromosomes are X-ray induced white revertants of P(lacW)B204, including XG9. Kevin Cook from Bloomington determined the breakpoints of all XG deficiencies but XG9. The only breakpoint information that I have is: distal breakpoint: between STS71-3 and STSDm2216 position of STS Dm2216: nt45452..45126 in AE003530 between CG13453 and CrebA position of STS71-3: nt 37440..37606 in AE003530, within CG17014 proximal breakpoint not determined (beyond the STS that I tested) breakpoint of XG7 proximal: between STS71-3 and STSDm2216