Figure 4.

Comparison of average amino acid identity of 31 marker genes versus transposase amino acid identity for connections in (a) non-conserved and (b) conserved neighborhoods. The correlation coefficient for (a) is 0.145 and 0.385 in (b), suggesting that connections in non-conserved neighborhoods are less likely to be due to vertical inheritance.

Hooper et al. Genome Biology 2009 10:R45   doi:10.1186/gb-2009-10-4-r45
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