ZOL341_SS07_Lecture09

ZOL341_SS07_Lecture09 - Last Class • Extensions of Mendel...

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Unformatted text preview: Last Class • Extensions of Mendel Laws • Dolly, Scottish Dorset ewe • Totipotent • determination/differentiation Early stages in the development of an animal Use of cell transplantation during early embryonic development to ascertain the timing of fate determination Transplantation of extra cells during early development of sea urchin results in abnormal development The first 3 divisions during the development of the worm Caenorhabditis elegans Polar granules Caenorhabditis elegans 959 ♀ 1031 ♂ A cell lineage diagram showing a cell that undergoes programmed cell death (apoptosis) and three that become differentiated Activation of a cell surface receptor and cell- to-cell signaling is required for proper vulval development Time scale (at 25 o C) of stages in the development of an adult Drosophila from a fertilized egg Very early steps in the development of Drosophila embryo • Maternal effect genes and morphagens Head and thoracic structures Fate map of Drosophila blastoderm...
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This note was uploaded on 04/02/2008 for the course ZOL 341 taught by Professor Dworkin during the Summer '08 term at Michigan State University.

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ZOL341_SS07_Lecture09 - Last Class • Extensions of Mendel...

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