tokens: Based on 16S rRNA gene sequence analysis , the 11 species having two tuf genes all have a common ancestor , while the six species having only one copy diverged from the enterococcal lineage before that common ancestor .
folded_tokens: base on 16 rrna gene sequence analysis , the 11 species have two tuf gene all have a common ancestor , while the six species have only one copy diverge from the enterococcal lineage before that common ancestor .