Table 1.

Frequency of midline guidance errors in semidominant interactions with sli² heterozygotes

Genotype	sli/+	sli/robo	sli/dock	mys/+;sli/+	mew/+;sli/+	if/+;sli/+	sli/scb	sli/+;tig/+	sli/+;lanA/+	NP5/+	NP5/+;sli/+	NP5/+;robo/+	NP5/+; scb/+
% Midline errors	3.4	44	77	31	8.3	40	58	38	31	2.2	28	26	3.2
Number of segments	146	127	110	90	96	104	108	92	99	138	198	120	92