Table 4. Significance levels for the different sources of variation in the analysis of comb size (CS) and comb mass (CM), according to the data set, with or without the RQ covariate.

Data set	R2	line	sex	line x sex	body weight	RQ
All data
CM (n = 134)	0.766	p<0.0001	p<0.0001	p<0.0001	p<0.1126	p<0.5181
CS (n = 156)	0.826	p<0.0001	p<0.0001	p<0.0245	p<0.1624	p<0.0121
All data
CM (n = 134)	0.765	p<0.0001	p<0.0001	p<0.0001	p<0.0928	-
CS (n = 156)	0.819	p<0.0001	p<0.0001	p<0.0245	p<0.1414	-
WL-DJ + NOE lines
CM (n = 91)	0.744	p<0.0001	p<0.0001	p<0.0001	p<0.0548	p<0.2375
CS (n = 100)	0.788	p<0.0001	p<0.0001	p<0.1756	p<0.1593	p<0.0056
WL-DJ + NOE lines
CM (n = 91)	0.739	p<0.0001	p<0.0001	p<0.0001	p<0.0420	-
CS (n = 100)	0.767	p<0.0001	p<0.0001	p<0.0381	p<0.1749	-
Heterozygous
carriers of Pea-comb
CM (n = 49)	0.825	p<0.0001	p<0.0001	p<0.0001	p<0.0792	p<0.0960
CS (n = 58)	0.817	p<0.0001	p<0.0005	p<0.1238	p<0.5497	p<0.0032
Heterozygous
carriers of Pea-comb
CM (n = 49)	0.814	p<0.0001	p<0.0001	p<0.0001	p<0.0454	-
CS (n = 58)	0.783	p<0.0001	p<0.0005	p<0.0294	p<0.4643	-
Line CH1
CM (n = 43)	0.867	-	p<0.0001	-	p<0.2025	p<0.1390
CS (n = 56)	0.905	-	p<0.0001		p<0.6203	p<0.2122

The number of observations used in each analysis is indicated in parenthesis for each variable.