Fig. 7.

The deleterious amino acid substitution of OR30 in the domestic silkworms. a Population-unique deleterious mutation of OR30 in the domestic silkworms. The sample started with “D” means domestic silkworm, “W” means wild silkworm. The sample names of wild silkworms represented the geographical sources. b The topology of OR30 and the location of the deleterious amino acid substitution. The topology was predicted using HMMTOP 2.1. Each circle represents an amino acid residue. The red circle represents the deleterious mutation site. TM: transmembrane helix