Fig. 2

The distribution of newly recruited genes across the autosomal chromosomes of H. sapiens, measured as MAD values (see Methods) as a function of phylostratum number. The open circles in each figure show the data for the phylostratum numbers found as the modal values for the 13 ortholog search engines studied. The red circles in A show the data taken, for every gene, from the lowest estimate among the 13 sources while the blue circles show these for the highest estimate among the 3 sources. In B, the red circles show the data obtained as the median of those obtained for those three sources that, over the entire genome gave the lowest age estimates, while the blue circles were from the three sources that similarly gave the highest overall age estimates