Book Viewer

Short Contents | Full Contents | Other books @ NCBI

| Modern Genetic Analysis Chapter 7. Gene Mutations Mutational Analysis Figure 7-35. The detection system for mutations at a specific locus of corn. The C allele determines the presence of a purple pigment in kernels, whereas c results in none. The geneticist makes the cross c / c × C / C , and C c mutations in the male germ line show up as unpigmented kernels on the cobs. (Note: the colored layer of the corn seed is triploid, formed by two identical female nuclei plus a male nucleus.)

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