TABLE 2

Tetrad frequency estimates from the best-fitting viability model for North American X chromosomes

LineModelÊ0(C.I.)Ê1(C.I.)Ê2(C.I.)Ê3(C.I.)
NC6XSingle0.073(0.062, 0.083)0.671(0.668, 0.674)0.254(0.247, 0.261)2.0 × 10-3(1.8 × 10-3, 2.2 × 10-3)
NC7XSingle0.091(0.075, 0.104)0.720(0.719, 0.722)0.188(0.176, 0.194)1.9 × 10-3(1.7 × 10-3, 2.2 × 10-3)
NC11XSingle0.108(0.090, 0.124)0.710(0.708, 0.713)0.179(0.167, 0.195)2.5 × 10-3(2.2 × 10-3, 2.8 × 10-3)
NC12XFull0.141(0.128, 0.152)0.694(0.693, 0.695)0.165(0.157, 0.173)6.1 × 10-4(5.6 × 10-4, 6.7 × 10-4)
NC14XSingle0.104(0.090, 0.118)0.762(0.745, 0.779)0.133(0.126, 0.141)7.5 × 10-4(6.7 × 10-4, 8.3 × 10-4)
NC19XSingle0.135(0.117, 0.151)0.742(0.712, 0.764)0.123(0.115, 0.132)0(0.0, 0.0)
NC20XSingle0.126(0.110, 0.139)0.714(0.713, 0.715)0.159(0.149, 0.168)1.7 × 10-3(1.6 × 10-3, 2.0 × 10-3)
NC29XSingle0.118(0.104, 0.130)0.734(0.716, 0.752)0.148(0.141, 0.156)0(0.0, 0.0)
NC50XSingle0.088(0.074, 0.099)0.761(0.745, 0.777)0.150(0.143, 0.158)5.8 × 10-4(5.3 × 10-4, 6.4 × 10-4)
  • E3 tetrad frequency estimates of 0 for lines NC19X and NC29X reflect the fact that no triple-crossover chromatids were recovered.