Incollection,

Case Studies in the Evolution of Species Complexes in Mimulus

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Evolutionary Biology, volume 11 of Evolutionary Biology, Springer US, (1978)
DOI: 10.1007/978-1-4615-6956-5_7

Abstract

The genus Mimulus—first proposed for evolutionary studies by a Carnegie Institution-sponsored conference at their Mather, California, transplant station in 1947—provides an excellent system for the experimental investigation of the nature of species. Mimulus contains in its different sections over a dozen clusters of complexes of closely related species, varieties, and populations in many diverse stages of evolutionary differentiation. These complexes lend themselves to the study of the changes within populations that lead to their reproductive isolation, one from another. Such changes are of basic significance. They are the “forks” in the path of evolution, the essential steps in the origin of new species. The purpose of these studies in Mimulus is to learn more about the occurrence, distribution, and effect of these forks or reproductive isolating mechanisms in order to improve our understanding of the dynamics of speciation.

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