Table 1.

Quantitative trait loci (QTL) for 24-hour REM sleep and wake duration

QTL	Trait	LOD	QTL Peak			SNP ID
			Start (MB)	End (MB)	Max (MB)
Q5@49	REM	4.22	4.09	137.03	73.50	rs13478324
Q13@2	Wake	5.14	4.69	83.45	16.72	rs13481708
Q13@23	REM	6.30	4.69	105.55	68.69	rs13481861

Peak boundaries are defined by a LOD score of 1 or less (see Winrow⁶ for full details).