Dear Dr. Rowell,
I read your interesting reply to Jamie Love's question about chromosome 2 fusion in humans and the necessity, or lack of it, for inbreeding to achieve successful mating. If there is no reproductive barrier or reduction in fertility in many cases, then should it not be rather common for a species to have variation in numbers of chromosomes, just as there is variation in other heritable characteristics that are not strongly selected against? But this does not seem to be the case.
Ron
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Ron Larson
Chair, and GG Brown Professor of Chemical Engineering
Professor of Macromolecular Science and Engineering, Biomedical Engineering, and Mechanical Engineering
Dept. of Chem. Engng.
2300 Hayward
Univ. of Michigan
Ann Arbor, MI 48109-2136
rlarson@...
734 936-0772
FAX 734 763-0459
http://www.engin.umich.edu/dept/cheme/people/larson.html
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