The theory that postulates that cellular

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Unformatted text preview: pharryngula The phylotypic stage of chordates, just after neurulation. Developmental Regulatory Networks Ii: Vertebrates Title Description Reference homologs orthologs paralogs positional information theory Genes related to each other by virtue of descent. Genes in different species that evolved from a common ancestral gene. Genes in a species that resulted from duplication of the cognate gene region during evolution. The theory that postulates that cellular differentiation is directed by a gradient of ligand concentration and the ability of cells to differentially respond to different concentrations of ligand. A group of cells in the prospective posterior region of the limb bud which secrete Shh and control the A/P polarity of the zone of polarizing activity developing limb. Developmental Regulatory Networks I: Drosophila And Other Invertebrates Title Description Reference A complex of five homeotic genes (lab, pb, dfd, scr, and antp) antennepedia complex that regulates anterior segment identity in Drosophila. A complex of three homeotic genes (ubx, abdA, and abdB) that specifies the identity of the third thoracic and all the bithorax complex abdominal segments in Drosophila. Genes that play an initial role in the segmentation cascade. Gap genes encode transcription factors, and as a result of gap genes their activity, broad body regions are specified. The portion of the homeotic selector genes that encodes for homeobox the homeodomain. DNA binding domain in the proteins encoded by homeotic selector genes. It is about 60 amino acids long and can be homeodomain present in genes other than home...
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This note was uploaded on 02/04/2014 for the course BIO 205 taught by Professor Cadigan during the Fall '12 term at University of Michigan.

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