Table A1.

Pearson coefficients of correlation between silencing efficiency and positional nucleotide content.

Position	A	G	C	U	ΔG
1	0.068	−0.174	−0.162	0.258	0.31
2	0.085	−0.082	−0.08	0.073	0.15
3	0.061	−0.043	−0.048	0.027	0.1
4	0.085	−0.015	−0.058	n.s.	0.09
5	0.078	−0.03	−0.055	n.s.	0.09
6	n.s.	−0.061	n.s.	0.07	0.1
7	0.043	−0.034	−0.055	0.043	0.06
8	n.s.	n.s.	−0.019	n.s.	0.02
9	0.027	−0.046	0.02	n.s.	0.08
10	0.083	−0.062	−0.045	0.021	0.1
11	0.057	n.s.	−0.04	n.s.	0.07
12	0.037	−0.037	−0.039	0.037	0.14
13	0.091	−0.069	−0.1	0.073	0.17
14	n.s.	−0.083	−0.037	0.109	0.07
15	n.s.	n.s.	n.s.	n.s.	n.s.
16	n.s.	−0.03	n.s.	n.s.	0.04
17	n.s.	−0.066	0.013	0.06	0.04
18	n.s.	−0.037	0.021	0.02	n.s.
19	−0.047	−0.019	0.026	0.041	−0.06
20	−0.132	0.047	0.059	0.029	−0.08
21	−0.028	0.032	n.s.	n.s.	0.04
22	0.034	−0.044	−0.031	0.039	−

Correlation coefficients, greater than 0.05, are shown in red. Correlation coefficients, less than −0.05, are shown in blue. n.s., non-significant correlation.