Figure 1
From: Duplication is more common among laterally transferred genes than among indigenous genes
Distribution of GC3 content of genes in categories A (dashed line) and D (solid line). (a) E. coli K12; (b) E. coli O157:H7; (c) S. flexneri; (d) S. typhimurium; (e) S. typhi; (f) B. subtilis; (g) B. halodurans; (h) C. acetobutylicum; (i) S. aureus.