Table 5 Quantification of X-Y chromatid segregation patterns in sunn mutant spermatocytes
Chromatid patternsunnaWTb
Anaphase I
XX/YY47 (30%)62 (100%)
XY/XY95 (61%)0
XXY/Y9 (6%)0
XYY/X5 (3%)0
Total156 (100%)62 (100%)
Prometaphase II or metaphase II
XX or YY78 (32%)121 (100%)
XY143 (59%)0
XXY or Y11 (5%)0
XYY or X9 (4%)0
XXYY or O00
Total241 (100%)121 (100%)
  • X and Y chromatids were identified by FISH using probes for the 359 bp and AATAC loci as described in legend of Fig. 2 and Materials and Methods.

  • a sunnZ3-5839/Df.

  • b Df/+.