Experimental Studies on the Nature of Species: Plant evolution through amphiploidy and autoploidy, with examples from the Madiinae PDF Download

Author: Jens Christian Clausen
Publisher:
ISBN:
Category : Bluegrasses
Languages : en
Pages : 202

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Author: Jens Christian Clausen
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 470

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Author: Theodosius Dobzhansky
Publisher:
ISBN:
Category : Genetics
Languages : en
Pages : 364

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Author: John A. Endler
Publisher: Princeton University Press
ISBN: 0691209510
Category : Science
Languages : en
Pages : 352

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Natural selection is an immense and important subject, yet there have been few attempts to summarize its effects on natural populations, and fewer still which discuss the problems of working with natural selection in the wild. These are the purposes of John Endler's book. In it, he discusses the methods and problems involved in the demonstration and measurement of natural selection, presents the critical evidence for its existence, and places it in an evolutionary perspective. Professor Endler finds that there are a remarkable number of direct demonstrations of selection in a wide variety of animals and plants. The distribution of observed magnitudes of selection in natural populations is surprisingly broad, and it overlaps extensively the range of values found in artificial selection. He argues that the common assumption that selection is usually weak in natural populations is no longer tenable, but that natural selection is only one component of the process of evolution; natural selection can explain the change of frequencies of variants, but not their origins.

Author: Anne Charmantier
Publisher: Oxford University Press
ISBN: 019967423X
Category : Medical
Languages : en
Pages : 293

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This book gathers the expertise of 30 evolutionary biologists from around the globe to highlight how applying the field of quantitative genetics - the analysis of the genetic basis of complex traits - aids in the study of wild populations.

Author: William J. Resetarits
Publisher:
ISBN: 9780195150421
Category : Science
Languages : en
Pages : 492

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Experimentation is a dominant approach in contemporary ecological research, pervading studies at all levels of biological organization and across diverse taxa and habitats. Experimental Ecology assembles an eminent group of ecologists who synthesize insights from these varied sources into a cogent statement about experimentalism as an analytical paradigm, placing experimentation within the larger framework of ecological investigation. The book discusses diverse experimental approaches ranging from laboratory microcosms to manipulation of entire ecosystem, illustrating the myriad ways experiments strengthen ecological inference. Experimental ecologists critique their science to move the field forward on all fronts: from better designs, to better links between experiments and theory, to more realism in experiments targeted at specific systems and questions.

Author: Theodore Garland
Publisher: Univ of California Press
ISBN: 0520261801
Category : Nature
Languages : en
Pages : 752

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This volume summarizes studies in experimental evolution, outlining current techniques and applications, and presenting the field's range of research.

Author: Jens Clausen
Publisher:
ISBN:
Category : Biogeography
Languages : en
Pages : 452

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Author: Gregor Mendel
Publisher:
ISBN:
Category : Hybridization, Vegetable
Languages : en
Pages : 48

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309069882
Category : Social Science
Languages : en
Pages : 610

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How we raise young children is one of today's most highly personalized and sharply politicized issues, in part because each of us can claim some level of "expertise." The debate has intensified as discoveries about our development-in the womb and in the first months and years-have reached the popular media. How can we use our burgeoning knowledge to assure the well-being of all young children, for their own sake as well as for the sake of our nation? Drawing from new findings, this book presents important conclusions about nature-versus-nurture, the impact of being born into a working family, the effect of politics on programs for children, the costs and benefits of intervention, and other issues. The committee issues a series of challenges to decision makers regarding the quality of child care, issues of racial and ethnic diversity, the integration of children's cognitive and emotional development, and more. Authoritative yet accessible, From Neurons to Neighborhoods presents the evidence about "brain wiring" and how kids learn to speak, think, and regulate their behavior. It examines the effect of the climate-family, child care, community-within which the child grows.