Experimental Studies on the Nature of Species: Genetic structure of ecological races
Author | : Jens Christian Clausen |
Publisher | : |
Total Pages | : 332 |
Release | : 1958 |
Genre | : Bluegrasses |
ISBN | : |
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Author | : Jens Christian Clausen |
Publisher | : |
Total Pages | : 332 |
Release | : 1958 |
Genre | : Bluegrasses |
ISBN | : |
Author | : Jens Christian Clausen |
Publisher | : |
Total Pages | : 0 |
Release | : 1940 |
Genre | : Heredity |
ISBN | : |
Author | : Robert Creed |
Publisher | : Springer Science & Business Media |
Total Pages | : 420 |
Release | : 2012-12-06 |
Genre | : Medical |
ISBN | : 1475704321 |
One of the privileges of appointment to a Chair at another University is that it gives one the right to talk to many distinguished people about their work and ideas. E. B. Ford was known to me before I came to Oxford as the author of a book on butterflies and as somewhat of an eccentric, but I was quite unprepared for the welcome he gave me into the Department of Zoology and for the enormous interest of the subject which he gradually revealed to me. My contact with the Genetics Laboratory was made easier by one of the first things I had to do. Within a few weeks of my arrival, it came to light that a new building for another department was to be erected on a piece of land, known to us as 'Henry's weed garden' but generally regarded as being derelict. Even my, at that time, elementary, knowledge of ecological genetics made it easy to realize that the population of caterpillars that had been under continuous observation there for eleven years put it in a rather special category of wilderness; although I did not succeed in saving it, I was able to persuade the university to substitute another experimental plot and this may have helped the geneticists to appreciate that the new professor was not only interested in electrical apparatus.
Author | : Jens Clausen |
Publisher | : |
Total Pages | : 312 |
Release | : 1958 |
Genre | : |
ISBN | : |
The ecological races of potentilla glandulosa; Genetics of ecological races; Response patterns at contrasting altitudes; Systems of genes controlling characters and their significance in environmental adaptation and evolution; Concepts of the genetic structure of ecological races.
Author | : Patrik Nosil |
Publisher | : OUP Oxford |
Total Pages | : 304 |
Release | : 2012-03-15 |
Genre | : Science |
ISBN | : 0191628026 |
The origin of biological diversity, via the formation of new species, can be inextricably linked to adaptation to the ecological environment. Specifically, ecological processes are central to the formation of new species when barriers to gene flow (reproductive isolation) evolve between populations as a result of ecologically-based divergent natural selection. This process of 'ecological speciation' has seen a large body of particularly focused research in the last 10-15 years, and a review and synthesis of the theoretical and empirical literature is now timely. The book begins by clarifying what ecological speciation is, its alternatives, and the predictions that can be used to test for it. It then reviews the three components of ecological speciation and discusses the geography and genomic basis of the process. A final chapter highlights future research directions, describing the approaches and experiments which might be used to conduct that future work. The ecological and genetic literature is integrated throughout the text with the goal of shedding new insight into the speciation process, particularly when the empirical data is then further integrated with theory.
Author | : Thomas J. Givnish |
Publisher | : Cambridge University Press |
Total Pages | : 652 |
Release | : 2000-05-08 |
Genre | : Science |
ISBN | : 9780521779296 |
This volume surveys advances in the study of adaptive radiation showing how molecular characters can be used to analyze the origin and pattern of diversification within a lineage in a non-circular fashion.
Author | : John Maynard Smith |
Publisher | : Oxford University Press |
Total Pages | : 361 |
Release | : 1997-10-30 |
Genre | : Nature |
ISBN | : 019850294X |
During evolution there have been several major changes in the way genetic information is organized and transmitted from one generation to the next. These transitions include the origin of life itself, the first eukaryotic cells, reproduction by sexual means, the appearance of multicellular plants and animals, the emergence of cooperation and of animal societies. This is the first book to discuss all these major transitions and their implications for our understanding of evolution.Clearly written and illustrated with many original diagrams, this book will be welcomed by students and researchers in the fields of evolutionary biology, ecology, and genetics.
Author | : United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Natural Resources, Agriculture Research, and Environment |
Publisher | : |
Total Pages | : 328 |
Release | : 1988 |
Genre | : Biodiversity |
ISBN | : |
Author | : O.A. Rognli |
Publisher | : Springer Science & Business Media |
Total Pages | : 324 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9401109664 |
This book contains papers and posters presented at the 18th Eucarpia Fodder Crops Section Meeting held at Loen, Nordfjord, Norway in August 1993. In most environments some form of marginal conditions or stress prevails. Few crops are being produced under such a wide range of environmental and management stresses as fodder crops. Improved adaptation of fodder crops to marginal conditions is crucial in developing sustainable, low-input agricultural systems. The book is unique in demonstrating the large diversity both in crops and environmental stresses that confront the forage breeders. Both general and specific aspects of adaptation to marginal growing conditions are presented, ranging from problems caused by snow and ice in the Subarctic regions of Europe to the severe drought problems in the Mediterranean regions. For everyone involved in studies of adaptation and breeding of perennial plants for marginal conditions or stress environments.
Author | : Ian Tattersall |
Publisher | : Simon and Schuster |
Total Pages | : 229 |
Release | : 2019-04-02 |
Genre | : Science |
ISBN | : 1643131109 |
What happens now that human population has outpaced biological natural selection? Two leading scientists reveal how we became who we are—and what we might become. When we think of evolution, the image that likely comes to mind is the iconic, straight-forward image of a primate morphing into a human being. Yet random events have played huge roles in determining the evolutionary histories of everything from lobsters to humans. However, random genetic novelties are most likely to "stick" in small populations. It is mathematically unlikely to happen in large ones. With our enormous and seemingly inexorably expanding population, humanity has fallen under the influence of the famous (or infamous) “bell curve.” This revelatory new book explores what the future of our species could hold, while simultaneously revealing what we didn’t become—and what we won’t become. A cognitively unique species, our actions fall on a bell curve as well. Individuals may be saintly or evil, narrow-minded or visionary. But it is possible not just for the species, but for a person to be all of these things—even in a single day. We all fall somewhere within the giant hyperspace of the human condition that these curves describe. The Accidental Homo Sapiens shows readers that though humanity now exists on this bell curve, we are far from a stagnant species. Tattersall and DeSalle reveal how biological evolution in modern humans has given way to a cultural dynamic that is unlike anything else the Earth has ever witnessed, and that will keep life interesting—perhaps sometimes too interesting—for as long as we exist on this planet.