Fig. 2

Positive selection in the core genome. a The scatter plot shows genes with Ka/Ks>1 in the bovine or human lineages. For better visualization the values are showed as the logarithm of the Ka/Ks ratio. b The pie charts show the distribution of biological process assignments to the genes with positive selection exclusively in bovine and human lineages. Categories involved in bacterial virulence are highlighted in violet. Categories with at least two genes were plotted