Lecture17 - Lecture 17 Development of Multicellular...

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Lecture 17 Development of Multicellular Organisms Chapter 22
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(1) cell proliferation: producing many cells from one (2) cell specialization: creating cells with different characteristics at different positions (3) cell interactions: coordinating the behavior of one cell with that of its neighbors (4) cell movement: rearranging the cells to form structured tissues and organs Four essential processes of embryogenesis
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Four essential processes by which a multicellular organism is made
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The squid Pax6 protein can mimick fly Pax6 and produce ectopic eye tissues in a fly leg – highly conserved genetic programs
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Sea urchin gastrulation the common ancestor of worms, mollusks, insects, vertebrates, and other complex animals must have : epidermal cells; gut cells; muscle cells Conserved anatomical schemes:
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Classic experimental embryology (cut and paste) —how cells and tissues interact to generate embryos
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--cell fate determination
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This note was uploaded on 11/10/2010 for the course BICD BICD 110 taught by Professor Zao during the Spring '09 term at UCSD.

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Lecture17 - Lecture 17 Development of Multicellular...

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