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Chapter 18 Using Genetics to Study Using Genetics to Study Development Development 20-1 Copyright © The McGraw-Hill Companies, Inc. Permission required to reproduce or display Outline of Chapter 18 Outline of Chapter 18  How model organisms serve as prototypes for  How model organisms serve as prototypes for research in developmental genetics research in developmental genetics  How investigators extrapolate the insights from this  How investigators extrapolate the insights from this research to all living forms research to all living forms  Experimental strategies developmental geneticists use  Experimental strategies developmental geneticists use to dissect the development of complex multicellular to dissect the development of complex multicellular organisms organisms  Key experimental results that provide a framework  Key experimental results that provide a framework for understanding how genes control cellular for understanding how genes control cellular differentiation during development differentiation during development 20-2 Copyright © The McGraw-Hill Companies, Inc. Permission required to reproduce or display Two central challenges for scientists Two central challenges for scientists studying development studying development  To identify which genes are critical for the  To identify which genes are critical for the development of particular cell types or organs. development of particular cell types or organs.  To figure out how these genes work together to ensure  To figure out how these genes work together to ensure that each is expressed at the right time, in the right