Table 1.

Analyses of genetic variance of environmental plasticity for homozygous chromosome 2 substitution lines.

	sternopleural bristle number					abdominal bristle number
source	d.f.a	MSb	F	p	σ2c	MSb	F	p	σ2c
sex	1	66.030	6.34	0.0122	fixed	44 182.0	167.86	<0.0001	fixed
line	325	14.544	1.40	0.0013	1.089	1117.717	4.23	<0.0001	220.481
sex×line	320	10.403	0.97	0.6117	−0.155	264.288	1.47	<0.0001	43.429
error	623	10.706			10.706	179.235			179.235

^aDegrees of freedom. The design is unbalanced as some lines produced individuals of only one sex.

^bType III mean squares.

^cVariance component.