Table 1. The genetic interaction between D-CblL and Drk depends on the PR^638-643 motif of D-CblL.

At 25°C	% Eggshell phenotype*
Progenies#	V3¥	V2¥	V1¥	Wt¥	N
drkEOA/+	0	0	3	97	421
L-A10	1	40	38	21	294
L-A10 in drkEOA/+	0	29	56	15	247
L-A12	5.2	66.2	26.3	2.3	311
L-A12 in drkEOA/+	0	27	63	10	176
mPR-AE	0	0	25	75	212
mPR-AE in drkEOA/+	0	0	25	75	390
mPR-GB	0	47	49	4	250
mPR-GB in drkEOA/+	0	50	50	0	362

*The number shows percentage in each phenotype.

^¥The Egfr activity is correlated with morphology of dorsal appendage, two dorsal appendages indicate normal activity of Egfr (Wt), two dorsal appendages fused at the base indicate low level of Egfr activity (V1), one fused dorsal appendage indicates the lower level of Egfr activity (V2), and no appendage indicates the lowest level of Egfr activity (V3).

^# EQ1-Gal4-driven over-expression of each D-CblL or D-CblL-mPR transgenic line was ether in the wild-type background or in the heterozygous drk^EOA mutant background.