Figure 1.

Percentage of transposable elements (TEs) in the genome representative amniotes. The bird genome contains the lowest percentage of TEs and genome size compared with the genomes of mammals and reptiles. (a) Bar chart shows the TE percentage of different birds (blue), reptiles (green) and mammals (red) and the red line indicates the genome size. (b) Distribution of total TE percentage in the genome of different species across reptiles, mammals and birds. Each dot represents a species. The species list is given as Supplementary Dataset S1.