Additional file 3: Figure S2.

The relationship between NNA/Ts : NNC/Gs ratio and intron number in the 11 test species. NNA/Ts: frequency of SCs having an A and a T in the third position, NNC/Gs: frequency of SCs having a C and a G in the third position.

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Qin et al. BMC Genomics 2013 14:56   doi:10.1186/1471-2164-14-56