Diversification of Hox gene clusters in osteoglossomorph fish in comparison to other teleosts and the spotted gar outgroup

An ancient genome duplication (TGD or 3R) occurred in teleost fish after divergence from the lineage leading to gar. This genome duplication is shared by the three extant teleost lineages: Osteoglossomorpha (bony-tongues), Elopomorpha (eels and tarpons) and Clupeocephala (a large clade including sal...