Introduction to Genetic Analysis 576

Introduction to Genetic Analysis 576 - 18.5 Forming complex...

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575 18 THE GENETIC BASIS OF DEVELOPMENT KEY QUESTIONS What sequence of events produces the basic body plan of an animal? How are polarities that give rise to the main body axes created? How do cells recognize their locations along the developing body axes? Do cells participate in single or multiple decision-making processes? What role does cell-to-cell communication play in building the basic body plan? Are the pathways for building biological pattern conserved among distant species? OUTLINE 18.1 The logic of building the body plan 18.2 Binary fate decisions: the germ line versus the soma 18.3 Forming complex pattern: the logic of the decision-making process 18.4 Forming complex pattern: establishing positional information
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Unformatted text preview: 18.5 Forming complex pattern: utilizing positional information to establish cell fates 18.6 Rening the pattern 18.7 The many parallels in vertebrate and insect pattern formation 18.8 The genetics of sex determination in humans 18.9 Do the lessons of animal development apply to plants? 18.10 Genomic approaches to understanding pattern formation A homeotic mutation that alters the basic Drosophila body plan. Homeosis is the replacement of one body part by another. In place of the normal antennae (shown at the top), an Antennapedia mutation causes the antennal precursor cells to develop into a leg. [F. R. Turner/BPS.] 44200_18_p575-610 3/24/04 10:46 AM Page 575...
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