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Recombination in XSxr bY males. (a) PAR-PAR recombination. (b) Yp-Sxr b recombination with expanded views showing the Y gene content of the paired segments and of the two types of recombinant from crossover 1 (black cross); (c) Bar chart of non-recombinant (No) and recombinant (Yp-Sxr b, PAR-PAR) frequencies
