Fig. 2.—

Conserved synteny of the GbX (A), GbE (B), Hbα/GbY (C), and Hbβ (D) chromosomal regions in the genomes of turtle, chicken, and green anole. Globin genes are shown in black; conserved neighboring genes are shaded in dark gray and genes without orthologs in the homologous regions are shaded in light gray. HbG (marked with an asterisk) is only present in the painted turtle. Otherwise, the two turtle species have the same gene configuration. Because of the lack of GbX in chicken, the coelacanth was included in the analysis. Synteny analyses of the Mb, Cygb, and Ngb chromosomal regions are given in supplementary figure S1, Supplementary Material online.