Lecture 23 - Genetic Basis of Development Fri 11/20/09 Bio...

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Genetic Basis of Development Fri 11/20/09 Bio 93 Fall 2009 Reading: Chapter 18, pages 366-373
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From early embryo to tadpole: what a difference 4 days makes •In the embryonic development of most organisms A single-celled zygote gives rise to cells of many different types, each with a different structure and corresponding function
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cells tissues organs organ systems organism a program of differential gene expression gives rise to the different cell types in a multicellular organism What developmental event is not necessary to transform a zygote into a mature Organism? Cell division, proliferation, cell differentiation, morphogenesis, and cell death Are all required
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stem cell research: identification and manipulation of the molecules and signals that control gene expression
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November 20, 2007
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Cytoplasmic determinants generate the first differences among cells in the early embryo Inductive signals generated in embryonic cells influence gene expression in neighbor cells Cytoplasmic determinants and Inductive signals
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Lecture 23 - Genetic Basis of Development Fri 11/20/09 Bio...

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