A molecular view of onychophoran segmentation |
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| Institution: | 1. Zoological Museum Hamburg, Martin-Luther-King-Platz 3, D-20146 Hamburg, Germany;2. Biozentrum, University of Basel, Klingelbergstrasse 50, Basel CH-4056, Switzerland;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Graduate School, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China;1. Universität zu Köln, Biozentrum Köln, Institut für Zoologie, Zülpicher Straße 47b, 50674, Köln, Germany;2. Justus-Liebig-Universität Gießen, Institut für Allgemeine Zoologie und Entwicklungsbiologie, AG Zoologie mit dem Schwerpunkt Molekulare Entwicklungsbiologie, Heinrich-Buff-Ring 38, 35392, Gießen, Germany;1. Department of Integrative Biology, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI 53706, USA;2. Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA;3. Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79th Street, New York, NY, USA;4. Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA;1. Department of Ecology & Evolutionary Biology, University of Connecticut, 75 N. Eagleville Rd., U-3043, Storrs, CT 06269-3043, USA;2. Department of Biology, Colby College, 5734 Mayflower Hill, Waterville, ME 04901, USA |
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| Abstract: | This paper summarizes our current knowledge on the expression and assumed function of Drosophila and (other) arthropod segmentation gene orthologs in Onychophora, a closely related outgroup to Arthropoda. This includes orthologs of the so-called Drosophila segmentation gene cascade including the Hox genes, as well as other genetic factors and pathways involved in non-drosophilid arthropods.Open questions about and around the topic are addressed, such as the definition of segments in onychophorans, the unclear regulation of conserved expression patterns downstream of non-conserved factors, and the potential role of mesodermal patterning in onychophoran segmentation. |
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| Keywords: | Onychophora Segmentation Development |
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