Figure 9From: Differential roles of TGIF family genes in mammalian reproductionProposed model of TGIFs evolution. TGIF2 emerged from TGIF1 by gene duplication about 420MYA while TGIFLX was generated from TGIF2 by a retrotransposon after eutherians diverged from marsupials about 148MYA.Back to article page