Fig. 5
From: Massive expansion and diversity of nicotinic acetylcholine receptors in lophotrochozoans
Stepwise and lineage-specific tandem duplication of nAChR genes in C. gigas and P. f. martensii. a Arrangement of nAChR genes in two tandemly duplicated arrays from C. gigas and P. f. martensii. Arrows represent gene direction in the scaffolds. Numbers above the red box are gene IDs of nAChRs, for example, 297 is OYG10012297. b Phylogenetic relationship and corresponding gene structure of tandemly duplicated nAChR genes. OYG: C. gigas; Pm: P. f. martensii