Table 1.

Parental RNAi with Sp8/9

	WT n (%)	Unspecific phenotype n (%)	Appendage phenotype n (%)	Total n
Sp8/9 pRNAi	4 (2.4%)	6 (3.6%)	160 (94%)	170
Control (injection buffer)	104 (95%)	5 (5%)	0 (0%)	109

Given are the total numbers (n) of specimens in each category. WT stands for wild-type specimens after injection. Unspecific phenotypes were specimens that showed some development, but had died before any discernible morphology was formed. These phenotypes had a similar frequency in the Sp8/9 pRNAi and in the control injections. The appendage phenotype was obtained only in the Sp8/9 pRNAi