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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Evol Dev. 2011 Nov-Dec;13(6):504–522. doi: 10.1111/j.1525-142X.2011.00507.x

Figure 1.

Figure 1

Sex comb structure and ontogeny in D. melanogaster. A. Female T1 leg showing TBRs (arrows). B. Male T1 leg showing the sex comb. C. SEM of a female leg showing the most distal TBR on t1. D. SEM of a male leg showing the sex comb and the area it came from. White arrow points to the “central bristle”, which develops from the same TBR as the sex comb (see also F). E. Schematic drawing of the female t1 showing the arrangement of TBRs. F. Schematic drawing of the male t1 showing sex comb migration and final position. Sex comb teeth are shown in solid grey, and the locations of their precursors in lighter grey. The central bristle develops from the ventral-most bristle precursor of the sex comb-forming TBR (compare with D).