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An SD (Segregation Distribution) – MR (Male Recombination) chromosome isolated from a natural population of Drosophila melanogaster
Published online by Cambridge University Press: 14 April 2009
Summary
A second chromosome line of Drosophila melanogaster (S-90), isolated from a northern California natural population, is able to induce (1) an increased frequency of X-chromosome visible mutations, (2) male recombination activity subject to reciprocal cross suppression, and (3) strong meiotic drive from heterozygous males. Based upon several lines of evidence (including the response to suppressor chromosomes of both systems) we conclude that S-90 contains both SD (Segregation Distortion) and MR (P or I) chromosome activity. The two systems appear to behave independently and simultaneously, and a small centromeric region of the S-90 chromosome appears to contain the major genetic elements of both systems.
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- Copyright © Cambridge University Press 1984