Table 3.

The power of the proposed test for 500 sibpairs when linkage signal is weak. A diallelic marker is completely linked to the QTL in perfect disequilibrium. The trait value is generated by a QTL with variance of varying size, together with polygenic and common environmental effects (with variance 0.3) and a random individual effect (with variance 0.5).

QTL variance	Fully informative marker		Partially informative marker
	Linkage	Association-Linkage	Linkage	Association-Linkage
0.03	0.102	0.307	0.083	0.285
0.05	0.148	0.402	0.145	0.475
0.10	0.284	0.666	0.260	0.575
0.20	0.563	0.874	0.520	0.838