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Body-plan evolution in the Bilateria: early antero-posterior patterning and the deuterostome-protostome dichotomy
1Marine Biology Research Division, Scripps Institution of Oceanography, University of California at San Diego, 92093-0202, USA. lzholland@ucsd.edu
Current Opinion in Genetics & Development
|July 13, 2000
Abstract:
Recent molecular analyses reveal common themes in early antero-posterior patterning in the four major groups of invertebrate deuterostomes and vertebrates in spite of large differences in the mode of gastrulation. Comparisons with Drosophila and Cnidarians suggest a scheme for evolution of the Bilaterian body plan and emphasize the pressing need for similar studies in a wider variety of organisms, especially more basal protostomes.