Figure 3
From: Low frequency of paleoviral infiltration across the avian phylogeny
Relationship between the proportion (percentage) of retrovirus-like elements in each vertebrate genome and host genome size. The y-axis shows the proportion of LTR-retrotransposons in a variety of vertebrate genomes, while the x-axis indicates genome length in gigabases (Gb). The solid line marks the phylogenetic linear regression for host genome size and the EVE proportion of the genome. Hosts are recognized as follows: hollow circles, birds; black, American alligator, green turtle and anole lizard; grey, mammals.