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Comparative Study
. 1991 Nov 15;88(22):10367-71.
doi: 10.1073/pnas.88.22.10367.

Four decades of inversion polymorphism in Drosophila pseudoobscura

W W Anderson  1 , J Arnold, D G Baldwin, A T Beckenbach, C J Brown, S H Bryant, J A Coyne, L G Harshman, W B Heed, D E Jeffery, et al.
Affiliations
Comparative Study

Four decades of inversion polymorphism in Drosophila pseudoobscura

W W Anderson et al. Proc Natl Acad Sci U S A. .

Abstract

We report data that continue the studies of Dobzhansky and others on the frequencies of third-chromosome inversions in natural populations of Drosophila pseudoobscura in North America. The common gene arrangements continue to be present in frequencies similar to those described four decades ago, and the broad geographic patterns also remain unchanged. There is only one pronounced trend over time: the increase in frequency of the Tree Line inversion in Pacific coast populations.

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