Table 3.

Numbers of synonymous and non-synonymous nucleotide changes of the ORs and OBPs down-regulated in the domestic silkworms

Polymorphism types	OBPs			ORs
	N	S	N/S	N	S	N/S
Polymorphisms across all samples	16	36	0.44	172	291	0.59
Polymorphisms in B. mori	9	24	0.38	99	127	0.78
Polymorphisms in B. mandarina	13	30	0.43	139	232	0.60
Unique polymorphisms in B. mori	3	6	0.50	32	39	0.82
Unique polymorphisms in B. mandarina	7	12	0.58	74	162	0.46

S synonymous, N non-synonymous, N/S non-synonymous/synonymous polymorphism ratios; The 4 OBPs and 13 ORs in Table 2 were used for counting the number of synonymous and non-synonymous nucleotide changes