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. 2018 Jul 17;19:542. doi: 10.1186/s12864-018-4937-x

Fig. 2.

Fig. 2

Characterise of evolutionary forces in H. manillensis. a ENC-GC3 plot. The solid line represents the expected curve when codon usage bias is only affected by mutation pressure. b Frequency distribution of ENC. c PR2-bias plot. Using the values of A3/(A3 + U3) against G3/(G3 + C3). d Neutrality plot analysis of GC12 and GC3 contents