 Selection alone is both the primary cohesive and disruptive force in evolution ... for sexual organisms it is the local interbreeding population and not the species that is clearly the evolutionary unit of importance.  Horticultural Reviews, Volume 28 - Page 20publié par - 2002 - 496 pagesAperçu limité - À propos de ce livre
 | Marc Ereshefsky - 1992 - 432 pages
...if they are subjected to different selective forces and will tend to remain similar if they are not. For sexual organisms it is the local interbreeding...that is clearly the evolutionary unit of importance. References and Notes We thank the members of the Population Biology Group of the Department of Biological... | |
 | David M. Spooner - 2005 - 136 pages
...likewise argued that the local population is the only unit of evolution, and species are artificial. Ehrlich and Raven (1969) documented many cases of...that is clearly the evolutionary unit of importance". So just what is a species? Our discussion presents only a small sample of a wide diversity of opinions... | |
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