Sturtevant, A. H. and Dobzhansky, Th. (1936) Inversions in the third chromosome of wild races of Drosophila pseudoobscura, and their use in the study of the history of the species. Proceedings of the National Academy of Sciences of the United States of America, 22 (7). pp. 448-450. ISSN 0027-8424 http://resolver.caltech.edu/CaltechAUTHORS:STUpnas36
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Genetic studies showed several years ago that the third chromosomes of wild strains of Drosophila pseudoobscura often carry suppressors of crossing-over. The salivary gland chromosome technique has made it possible to demonstrate not only that these are inverted sections, but also that there are many different inversions present in wild populations inhabiting different geographical regions. So far we have found at least fourteen different gene-sequences in wild stocks, and have found that in most geographical regions several sequences are present, though no single sequence appears to occur throughout the range of the species. There are a number of problems raised by these facts, most of which need further study; the present account is to be regarded only as a preliminary note.
|Additional Information:||© 1936 by the National Academy of Sciences. Communicated June 8, 1936.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||30 Jan 2008|
|Last Modified:||26 Dec 2012 09:49|
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