TABLE 2

Results with genetic scenario 1 at segment 1 (1–10 cM)

CaseMethod%aΠ1bEmbedded Image cEmbedded Image dEmbedded Image eμfEmbedded Image gΔs/2h
aSegment mapping1001001.02 ±0.020.00 ± 0.000.58 ± 0.020.06 ± 0.050.03 ± 0.02−0.02 ± 0.03
Mixed model1001001.02 ± 0.020.58 ± 0.020.06 ± 0.050.00 ± 0.03
Random model1001001.02 ± 0.020.58 ± 0.020.06 ± 0.05
Fixed model61681.84 ± 0.070.06 ± 0.06−0.06 ± 0.04
bSegment mapping1001002.04 ± 0.020.00 ± 0.000.01 ± 0.01−0.01 ± 0.01−0.20 ± 0.031.18 ± 0.03
Mixed model1001002.06 ± 0.020.00 ± 0.00−0.02 ± 0.011.04 ± 0.02
Random model1001002.03 ± 0.020.52 ± 0.05−0.39 ± 0.02
Fixed model1001002.06 ± 0.02−0.02 ± 0.011.04 ± 0.02
cSegment mapping1001000.98 ± 0.020.01 ± 0.010.59 ± 0.05−0.04 ± 0.08−0.22 ± 0.031.12 ± 0.09
Mixed model1001000.98 ± 0.020.66 ± 0.05−0.04 ± 0.080.97 ± 0.08
Random model1001000.97 ± 0.020.92 ± 0.07−0.46 ± 0.07
Fixed model961001.55 ± 0.060.01 ± 0.090.99 ± 0.09
  • The statistics are the average of 30 replicates. The average simulated mean QTL variance and Δ/2 were 0.92 and 0.01 in case a and 0.78 and 0.92 in case c, respectively.

  • a Percentage of replicates where partition or segment 1 (the QTL position) corresponded to maximum likelihood.

  • b Power, computed as the percentage of replicates where LR exceeded the empirical 5% significance threshold (see Table 1), out of those where the maximum LR was at position 1.

  • c Residual variance estimate.

  • d Estimate of the genetic variance due to the complement of segment 1 (11–60 cM).

  • e Estimate of the genetic variance due to segment 1.

  • f Estimate of the general mean.

  • g Estimate of the mean difference due to the complement of segment 1.

  • h Estimate of the mean difference due to segment 1.