Genetic Innovation in Vertebrates: Gypsy Integrase Genes and Other Genes Derived from Transposable Elements

Figure 3

One possible scenario for the evolution of GIN genes in vertebrates. The two molecular domestication events are highlighted by blue and red stars, having led to the formation of GIN1 and GIN2, respectively. Presence (+) or absence (−) of GIN1 and GIN2 in the different lineages is indicated.