Figure 2From: PGBD5: a neural-specific intron-containing piggyBac transposase domesticated over 500 million years ago and conserved from cephalochordates to humansSimplified phylogenetic tree of organisms examined. PGBD5 homologs are found in cephalochordates and all vertebrates examined, but nowhere else. This cladogram does not imply either the timing or degree of evolutionary divergence.Back to article page