Sequence characteristics of the 18S rRNA gene from 8 species in the genus Acartia, and 184 other copepod species.

18S, copepod 18S rRNA genes with the two ends trimmed (all the variable regions were intact); TCs, Total conserved region sequences in 18S; CVs, combination of all variable regions; V1-9, variable regions; GC, GC contents; Nt, total number of sites compared; Nc, total number of conserved sites; Nv, total number of variable sites; PI, parsimony-informative sites.Sequence characteristics of the 18S rRNA gene from 8 species in the genus Acartia, and 184 other copepod species.