Variation In Blood Group Frequencies In Populations Of Song Sparrows Of The San Francisco Bay Region
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Geographic Variation, Speciation and Clines. (MPB-10), Volume 10
Author | : John A. Endler |
Publisher | : Princeton University Press |
Total Pages | : 262 |
Release | : 2020-03-31 |
Genre | : Science |
ISBN | : 0691209456 |
Geographic Variation, Speciation and Clines explores the origins and development of geographic variation, divergence, and speciation. In particular it is concerned with genetic divergence as it is usually found on continents, among groups of populations isolated only by distance. Although earlier writers on this topic considered the effects of geography and dispersal, intense geographic differentiation and speciation were thought to require complete isolation. Professor Endler shows how geographic differentiation and speciation may develop in spite of continuous gene flow. Following a review of the diverse and scattered literature on gene flow and population differentiation, the author discusses the relationships among gene flow, dispersal, and migration. He then summarizes the factors which limit the geographic extent of gene flow, and those which allow steep clines to develop in the absence of barriers to gene flow. His analysis draws on examples from the field, experiments, and single- and multiple-locus models. The mechanism and conditions for parapatric speciation are presented: steepening clines, development into hybrid zones, and the evolution of sexual isolation. In the final chapter the author considers the interpretation of natural clines and the associated geographic patterns of subspecies and species.
Avian Biology
Author | : Donald S. Farner |
Publisher | : Elsevier |
Total Pages | : 607 |
Release | : 2013-09-25 |
Genre | : Science |
ISBN | : 1483270009 |
Avian Biology is a collection of papers that deals with biological aspects of birds such as their classification and habitat behavior. One paper reviews how birds are classified through practical systematics, study of fossils, and some of the problems encountered in the arrangement of major groups. Another paper discusses the origin and evolution of birds from their reptilian predecessors to their current evolutionary rates. Evolutionary rates vary depending on access to new habitats; if the environment is static, evolutionary rates can also slow down. One author discusses the inter-relations of sea birds with their marine environment, including coastal areas and the biological properties of the surface water. Another author describes the biology of desert birds relating to nomadism behavior and physical adaptations especially to the arid environment. The author also describes the cooling mechanism of these desert birds. Another paper evaluates the ecological aspect of behavior that includes foraging, habitat selection, mating, and flocking cohesion. Avian biologists, zoologists, and readers who have a general interest in birds will find this book useful.
Evolution and the Genetics of Populations, Volume 4
Author | : Sewall Wright |
Publisher | : University of Chicago Press |
Total Pages | : 590 |
Release | : 1984-06-15 |
Genre | : Science |
ISBN | : 0226910415 |
These volumes discuss evolutionary biology through the lense of population genetics.
Genetics of the Evolutionary Process
Author | : Theodosius Dobzhansky |
Publisher | : Columbia University Press |
Total Pages | : 524 |
Release | : 1970 |
Genre | : Computers |
ISBN | : 9780231083065 |
The world's foremost geneticist surveys the major developments in what is emerging as the most important single area of scientific inquiry in the twentieth century: biological theory of evolution.
Commencement Programs
Author | : University of California, Berkeley |
Publisher | : |
Total Pages | : 1032 |
Release | : 1962 |
Genre | : Commencement ceremonies |
ISBN | : |
Avian Biology
Author | : Donald Sankey Farner |
Publisher | : |
Total Pages | : 620 |
Release | : 1971 |
Genre | : Animal ecology |
ISBN | : |