Fig. 2. Deletion non-complementation maps loss of the HRP epitope to a TM3 breakpoint at 71C. Deletions covering the third chromosome were screened for loss of the HRP epitope in combination with the TM3 balancer. Breakpoints are indicated for complementing deletions (white) and non-complementing deletions (black). The gray zone labeled HRP^- indicates the smallest region that contains a gene responsible for HRP-epitope expression. The distal end of the interval is defined by the TM3 breakpoint at 71C. The proximal breakpoint is limited to 71C1/2 by D^5rv14 and Brd¹⁵.

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