Figure 1
From: Emergence and evolution of the glycoprotein hormone and neurotrophin gene families in vertebrates
Comparative genomic environment of gphβ subunit genes in representative vertebrates. Human (Hs), chicken (Gg) and zebrafish (Dr) gphβ (lhβ, fshβ and tshβ) environment ([GPHβ]) are shown with their coordinates in megabase pairs from the p end of the relevant chromosome (chr.). [LHβ] is not found in chicken genomic databases but the existence of at least lhβ and lin7b is known from their cDNA product. A fish-specific genomic duplication (FSGD) generated specific duplicates in zebrafish. A paralogous environment devoid of any gphβ subunit gene is named [GPHβ-Ghost].