Bio EE reading notes - Averoff Article Head thorax abdomen Mandible maxilla telson Maxillipeds(modified anterior thoracic limbs used for feeding

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Averoff Article Head, thorax, abdomen Mandible, maxilla, telson Maxillipeds (modified anterior thoracic limbs used for feeding) Monoclonal Antibody - Laboratory designed antibodies that can bind to a specific piece of a protein (in this case a piece found in the proteins made by both the Ubx and abdA gene), and subsequently be visually identified by staining. Ubx (Ultrabithroax) and AbdA (Abdomen A) Changes in the segmental organization of arthropod bodies may therefore be driven by changes in the function of Hox genes We show here that changes in the expression pattern of the Hox genes Ubx and AbdA in different crustaceans correlate well with the modification of their anterior thoracic limbs into feeding appendages Maxillipeds are generally reduced in size, show modification, fusion, or loss of particular limb elements, and are primarily associated with feeding, not locomotion9– .These morphological specializations are reminiscent of partial homeotic transformations4 (thoracic to gnathal) and represent the evolution of new and distinct segmental identities in the anterior region of the trunk. In branchiopod crustaceans, which do not have maxillipeds, Ubx and abdA are expressed throughout the thoracic region. In peracarids, the first, and sometimes second, of the eight thoracic segments bear limbs
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This note was uploaded on 10/28/2008 for the course BIOEE 2070 taught by Professor Provine,w. during the Fall '07 term at Cornell University (Engineering School).

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Bio EE reading notes - Averoff Article Head thorax abdomen Mandible maxilla telson Maxillipeds(modified anterior thoracic limbs used for feeding

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