You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Laboratory Experiments on Speciation: What Have We Learned in 40 Years?
William R. Rice and Ellen E. Hostert
Vol. 47, No. 6 (Dec., 1993), pp. 1637-1653
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2410209
Page Count: 17
You can always find the topics here!Topics: Speciation, Genetics, Gene flow, Drosophila, Reproductive isolation, Evolution, Hybridity, Population genetics, Assortative mating, Divergent evolution
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
We integrate experimental studies attempting to duplicate all or part of the speciation process under controlled laboratory conditions and ask what general conclusions can be made concerning the major models of speciation. Strong support is found for the evolution of reproductive isolation via pleiotropy and/or genetic hitchhiking with or without allopatry. Little or no support is found for the bottleneck and reinforcement models of speciation. We conclude that the role of geographical separation in generating allopatry (i.e., zero gene flow induced by spatial isolation) has been overemphasized in the past, whereas its role in generating diminished gene flow in combination with strong, discontinuous, and multifarious divergent selection, has been largely unappreciated.
Evolution © 1993 Society for the Study of Evolution