TABLE 13

ndj1-induced changes in percentage (and number) of crossovers and noncrossovers for intervals containing ARG4 or HIS4 among tetrads with 5:3, 6:2, or normal 4:4 segregation for the relevant palindrome site

5:36:25:3 + 6:2Normal 4:4
CONCOCONCOCONCOCONCOTotal
A. HIS4
YFS621NDJ11.5 (38)2.2 (55)0.9 (24)0.7 (18)2.4 (62)2.9 (73)15.0 (384)79.7 (2035)2554
YFS646ndj12.8 (31)1.3 (15)1.3 (15)0.3 (3)4.1 (46)1.6 (18)15.6 (173)78.7 (875)1112
Change+1.3−0.9+0.4−0.4+1.7−1.3+0.6−1.0
% change+86−41+44−57+71−45+4.0−1.3
Pa0.0040.050.130.0030.010.340.25
Pb0.0060.10.0010.68
B. ARG4
YFS40NDJ11.3 (41)2.2 (68)2.2 (69)1.8 (57)3.6 (110)4.0 (125)22.0 (680)70.4 (2178)3093
YFS41ndj12.0 (68)1.4 (47)3.3 (114)1.6 (57)5.2 (182)3.0 (104)23.6 (820)68.1 (2362)3468
Change+0.7−0.8+1.1−0.2+1.6−1.0+1.6−2.3
% change+54−36+50−11+44−25+7.3−3.3
Pa0.020.0050.0050.270.00050.010.060.02
Pb0.0020.050.00020.08
C. ARG4
YFS621NDJ12.6 (72)4.8 (135)3.3 (93)2.1 (60)5.9 (165)6.9 (195)18.5 (522)68.7 (1933)2815
YFS646ndj12.7 (32)3.7 (43)4.7 (55)1.6 (19)7.4 (87)5.3 (62)17.0 (198)70.3 (821)1168
Change+0.1−1.1+1.4−0.5+1.5−1.6−1.5+1.6
% change+3.8−23+42−24+25−23−8.1+2.3
Pa0.370.060.020.150.030.03
Pb0.30.060.010.24
  • CO, crossover; NCO, noncrossover.

  • a One-tailed probabilities associated with the z-values calculated from the differences in the proportions of the NDJ1 and ndj1 classes to their respective totals.

  • b Chi-square probabilities that the ratios of crossovers to noncrossovers in the NDJ1 and ndj1 samples could differ as much by chance alone.