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. 2012 Dec 26;3:173. doi: 10.3389/fendo.2012.00173

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Copyright © 2012 Pasquier, Lafont, Tostivint, Vaudry, Rousseau and Dufour.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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Proposed origin of osteichthyan Kiss tetra-paralogons. The paralogous genes of each of the 11 identified families delineate four paralogons in spotted gar, coelacanth, and human genomes and a duplicated tetra-paralogon in the zebrafish genome. This suggests a common origin of the three Kiss before the two whole genome duplication rounds (1R and 2R) which occurred in the early vertebrate history. This also suggests no impact of the teleost-specific 3R on Kiss number in current teleost species. Chr, chromosome; LG, linkage group.