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Table 2 Sex chromosome synapsis in pachytene spermatocytes in the 47, XYY patient

From: Preferential Y-Y pairing and synapsis and abnormal meiotic recombination in a 47,XYY man with non obstructive azoospermia

Cell type No. of cells analyzed No. (%a) of cells showing Y associated with X No. (%a) of cells not showing Y associated with X
YY partially synapsed 52 35(67.3 %)a 17(32.7 %)a
YY completely synapsed 19 10(52.6 %)a 9(47.4 %)a
XY + Y 0 0 0
Total (%) 71 45(63.4 %)a 26(36.6 %)a
  1. Sex chromosomes synapsis was determined by over lapping SYCP1 signals
  2. aThe percentages were calculated by dividing the number of cells showing Y associated or not associated with X (respectively) with the corresponding number of cells analyzed