Fig. 5. (A) Cytogenetic representation of the 59B region showing the three overlapping deficiencies relevant to this study. The extent of the deficiencies (coloured boxes) and their breakpoints have been taken from curated data on the Drosophila database FlyBase. (B) FDPP images of rdgA1;su(100) showing rescue of degeneration. Comparable images showing rescue of degeneration by Df(2R)59AD/su(100) but not Df(2R)59AB/su(100) and Df(2R)3_70/su(100).