TABLE 2

Adding noise to the system

Data seta
W–IndW–Ind–SNPR–IndR–Ind–SNP
AllP < 10–6AllP < 10–6AllP < 10–6AllP < 10–6
%b 69526740
δ = 0c46528126070823
δ < 10d4853202663732250
δ < 100d5056273466772760
δ > 104e1313212085176
Data set
B–IndB–Ind–SNPBR–Ind
AllP < 10–6AllP < 10–6AllP < 10–7
%724273
δ = 079769176058
δ < 10949455706159
δ < 1009910080996564
δ > 1040.40180.176
  • a The data sets are: W, Whitney et al., simulated chromosomes; R, Rosenwald et al., simulated chromosomes; B, Brem et al. data and chromosomes; BR, data from Brem et al. and simulated chromosomes as in R. Suffixes are: –Ind, 16% of observations randomly removed; –SNP, 90% of markers removed (1 every 10 successive markers was saved).

  • b Percentage of QTL that were significant in the complete and reduced data sets.

  • c Percentage of QTL whose positions were the same in the complete and reduced data sets.

  • d Percentage of QTL whose position differed by <X SNPs in the complete and reduced data sets.

  • e Percentage of QTL whose position differed by >104 SNPs in the complete and reduced data sets.