POLLINATION SYSTEMS AS ISOLATING MECHANISMS IN ANGIOSPERMS
نویسندگان
چکیده
منابع مشابه
The evolution of wind pollination in angiosperms
Theresa M. Culley* Stephen G. Weller Ann K. Sakai Dept of Ecology and Evolutionary Biology, University of California–Irvine, Irvine, CA 92697, USA. *e-mail: [email protected] Although much emphasis has been placed on specialist pollination systems, attention is shifting towards systems in which plants are visited by a variety of pollinators [1,2]. Until recently, examples of generalist pollinatio...
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Ernst Mayr's (1942) formulation of the biological species concept clarified a vexing question for evolutionary biologists: What is a species? Mayr's view of the species concept has widespread acceptance owing to its simplicity. Nevertheless, the manner in which species arise by the process of natural selection remains controversial. The problem is that the process of speciation takes a very lon...
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ژورنال
عنوان ژورنال: Evolution
سال: 1949
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1949.tb00007.x