Book Viewer

Short Contents | Full Contents | Other books @ NCBI

| Modern Genetic Analysis Chapter 16. The Genetic Basis of Development Forming Complex Pattern: Utilizing Positional Information to Establish Cell Fates Figure 16-22. A diagram depicting the mutant larval phenotypes due to mutations in the three classes of zygotically acting genes controlling segment number in Drosophila, with representative mutants in each class. The denticle belts, shown as red trapezoids, are segmentally repeating swatches of dense projections on the ventral surface of the larval exoskeleton. The boundary of each segment is the dotted line. On the left, the pink regions indicate, on a diagram of a wild-type larva, the AP domains of the larva that are missing in each mutant. The diagrams on the right are the resulting mutant phenotypes.

© 1999 by W. H. Freeman and Company. All rights reserved.