Table 7.

Comparison of Nonparametric and Parametric Regressions, for Two QTLs, in the Absence of Epistasis and with 100 Sib Pairs^[Note]

	Percentagea of
Type of Identification (First QTL/Second QTL)	NP	P1	P2
No dominance effect at either QTLb:
Correct/correct	93.2	96.5	97.4
Correct/incorrect	6.8	3.5	2.6
Incorrect/correct	0	0	0
Incorrect/incorrect	0	0	0
Dominance effect at the first QTLc:
Correct/correct	82.2	65.7	69.6
Correct/incorrect	5.3	3.0	3.4
Incorrect/correct	9.8	23.6	21.8
Incorrect/incorrect	2.5	6.7	5.2

Note.—Simulation parameter values were α=5, σ²=1, and θ₁=θ₂=θ₃=θ₄=θ₅=.01, and there were 1,000 replications.

^aDefinitions of abbreviations are the same as those given in table 1.

^bTrait variance of 80% was explained by the first QTL.

^cTrait variance of 60% was explained by the first QTL.