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Independent Hox-cluster duplications in lampreys
Claudia Fried1, Sonja J Prohaska, Peter F Stadler
1Bioinformatik, Institut für Informatik, Universität Leipzig, Kreuzstrasse 7b, D-04103 Leipzig, Germany.
Abstract:
The analysis of the publicly available Hox gene sequences from the sea lamprey Petromyzon marinus provides evidence that the Hox clusters in lampreys and other vertebrate species arose from independent duplications. In particular, our analysis supports the hypothesis that the last common ancestor of agnathans and gnathostomes had only a single Hox cluster which was subsequently duplicated independently in the two lineages.