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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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- Spring '08