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| Modern Genetic Analysis Chapter 8. Chromosome Mutations Chromosomal Rearrangements Figure 8-24. Position-effect variegation. (a) The translocation of w+ to a position next to hete-rochromatin causes the w+ function to fail in some cells, producing position-effect variegation. (b) A Drosophila eye showing the position-effect variegation. (Part b from Randy Mottus.)

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