Download or read book Variation in Blood Group Frequencies in Populations of Song Sparrows of the San Francisco Bay Region written by George T. Ferrell and published by . This book was released on 1965 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographic Variation Speciation and Clines MPB 10 Volume 10 written by John A. Endler and published by Princeton University Press. This book was released on 2020-03-31 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Avian Biology written by Donald S. Farner and published by Elsevier. This book was released on 2013-09-25 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Genetics of the Evolutionary Process written by Theodosius Dobzhansky and published by Columbia University Press. This book was released on 1970 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Evolution and the Genetics of Populations Volume 4 written by Sewall Wright and published by University of Chicago Press. This book was released on 1984-06-15 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: These volumes discuss evolutionary biology through the lense of population genetics.

Download or read book Commencement Programs written by University of California, Berkeley and published by . This book was released on 1962 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monographs in Population Biology written by and published by . This book was released on 1967 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Avian Biology written by Donald Sankey Farner and published by . This book was released on 1971 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Zoological Record written by and published by . This book was released on 1966 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Fish and Game written by and published by . This book was released on 1985 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Influence on the Ontogeny Allometry and Behavior of the Song Sparrow Melospiza Melodia written by Julia Irene Smith and published by . This book was released on 1993 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acta XIX Congressus Internationalis Ornithologici written by Henri Ouellet and published by . This book was released on 1988 with total page 1430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Abstracts written by and published by . This book was released on 1948 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commencement programme written by University of California, Berkeley and published by . This book was released on 1963 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Information Concerning Cargill Salt s North Bay Properties west Side written by Cargill, Inc and published by . This book was released on 1993 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Master s Thesis Bibliography of Nongame Animals written by and published by . This book was released on 1980 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Agricultural Index written by and published by . This book was released on 1968 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt: