Natural Selections National Parks in Atlantic Canada , 1935-1970 During the Depression the Canadian National Parks Branch was under pressure to make the park system truly national , to bring the advantages of parks to all provinces .
Author: Alan Andrew MacEachern
Publisher: McGill-Queen's Press - MQUP
During the Depression the Canadian National Parks Branch was under pressure to make the park system truly national, to bring the advantages of parks to all provinces. In Atlantic Canada, however, it found itself dealing with an environment that was far different from what it was accustomed to in Western Canada. The land areas were smaller, flatter, and, having been settled for generations, could hardly be considered wild. Wildlife was smaller and less numerous.
near-perfection of living things, but as evidence of the power, wisdom, and goodness of natural selection, as manifested in evolution. Such gestures are understandable and perhaps even laudable, contributing as they do to a healthy ...
Author: David P. Barash
If we are, in part, a product of our genes, can free will exist? Incisive and engaging, this indispensable tour of evolutionary biology runs the gamut of contemporary debates, from science and religion to our place in the universe....
“ Genetic Fitness and Natural Selections : Myth or Metaphor . ” In Evolution of Social Behavior and Integrative Levels , ed . Gary Greenberg and Ethel Tobach , 87–112 . Hillsdale N.J .: Erlbaum . Ho , Mae - wan , Peter Saunders ...
Author: Robert G. Wesson
Publisher: MIT Press
proposes an approach to evolution that is more in harmony with modern science than Darwinism or neo-Darwinism
Interestingly, many selection-candidate genes identified by the latter approach were associated with African American ... to natural selection in African Americans, we performed a systematic analysis on genes associated with diseases.
Author: Wenfei Jin
In this thesis, Dr. Jin presents the distribution of ancestral chromosomal segments in the admixed genome, which could provide the information needed to explore population admixture dynamics. The author derives accurate population histories of African Americans and Mexicans using genome-wide single nucleotide polymorphisms (SNPs) data. Mapping the genetic background facilitates the study of natural selection in the admixed population, and the author identifies the signals of selection in African Americans since their African ancestors left for America. He further demonstrates that many of the selection signals were associated with African American-specific high-risk diseases such as prostate cancer and hypertension, suggesting an important role these disease-related genes might have played in adapting to their new environment. Lastly, the author reveals the complexity of natural selection in shaping human susceptibility to disease. The thesis significantly advances our understanding of the recent population admixture, adaptation to local environment and its health implications.
Naturally occurring variations in sex ratio at birth can be large ; in two seal species ( /6 ) , females pupping early ... Instead , natural selection must favor one or more genes that adjust the sex ratio produced by an adult female to ...
Author: Robert Trivers
Publisher: Oxford University Press
Robert Trivers is a pioneering figure in the field of sociobiology. For Natural Selection and Social Theory, he has selected eleven of his most influential papers, including several classic papers from the early 1970s on the evolution of reciprocal altruism, parent-offspring conflicts, and asymmetry in sexual selection, which helped to establish the centrality of sociobiology, as well as some of his later work on deceit in signalling, sex antagonistic genes, and imprinting. Trivers introduces each paper, setting them in their contemporary context, and critically evaluating them in the light of subsequent work and further developments. The result is a unique portrait of the intellectual development of sociobiology, with valuable insights for evolutionary biology, anthropology, and psychology.
complexity of nature in the unfriendly clothing of mathematics . ... A consequence of any one organism being surrounded by others is that as natural selection changes those surrounding organisms through modification , the environment is ...
Author: John Tyler Bonner
Publisher: Princeton University Press
Bonner makes a new attack on an old problem: the question of how progressive increase in the size and complexity of animals and plants has occurred. The book shows how an understanding of the grand course of evolution can come from combining our knowledge of genetics, development, ecology, and even behavior. *Lightning Print On Demand Title
152 SUMMARY OF COMMON MISUNDERSTANDINGS Biological constraints make natural selection redundant Notoriously, in their “Spandrels” paper, Stephen Jay Gould and Richard Lewontin claimed that organisms' underlying ground plans – archetypes ...
Author: Michael Ruse
Publisher: Cambridge University Press
Natural selection, as introduced by Charles Darwin in the Origin of Species (1859), has always been a topic of great conceptual and empirical interest. This book puts Darwin's theory of evolution in historical context showing that, in important respects, his central mechanism of natural selection gives the clue to understanding the nature of organisms. Natural selection has important implications, not just for the understanding of life's history – single-celled organism to man – but also for our understanding of contemporary social norms, as well as the nature of religious belief. The book is written in clear, non-technical language, appealing not just to philosophers, historians, and biologists, but also to general readers who find thinking about important issues both challenging and exciting.
I have called this principle , by which each slight variation , if useful , is preserved , by the term Natural Selection , in order to mark its relation to man's power of selection . We have seen that man by selection can certainly ...
4.7 Selection among more inclusive phylads As argued in Chapter 3, the set of concrete organisms that collectively bears a single gene ... will provide the potential for natural selection, no matter what the taxonomic rank of the group.
Author: George Christopher Williams
Publisher: Oxford University Press on Demand
This important new volume examines the mechanism and action of natural selection in evolution. It includes discussions of the gene as the unit of selection, clade selection and macroevolution, and other timely issues.
prominent evolutionist, stresses that natural selection has never been observed to make living things evolve: “No one has ever produced a species by mechanisms of natural selection. No one has ever gotten near it and most of the current ...
Author: Joseph Seckbach
Publisher: World Scientific
The debate between divine action, or faith, and natural selection, or science, is garnering tremendous interest. This book ventures well beyond the usual, contrasting American Protestant and atheistic points of view, and also includes the perspectives of Jews, Muslims, and Roman Catholics. It contains arguments from the various proponents of intelligent design, creationism, and Darwinism, and also covers the sensitive issue of how to incorporate evolution into the secondary school biology curriculum. Comprising contributions from prominent, award-winning authors, the book also contains dialogs following each chapter to provide extra stimulus to the readers and a full picture of this OC hotOCO topic, which delves into the fundamentals of science and religion."
Release on 2018-10-30 | by George Christopher Williams
Fisher and Ford, 1947; Ford, 1956; Clarke, Dickson, and Sheppard, 1963) for selection coefficients in nature that exceed mutation rates by one to many multiples of ten. There can be no doubt that the selective accumulation of genes can ...
Author: George Christopher Williams
Publisher: Princeton University Press
Biological evolution is a fact—but the many conflicting theories of evolution remain controversial even today. When Adaptation and Natural Selection was first published in 1966, it struck a powerful blow against those who argued for the concept of group selection—the idea that evolution acts to select entire species rather than individuals. Williams’s famous work in favor of simple Darwinism over group selection has become a classic of science literature, valued for its thorough and convincing argument and its relevance to many fields outside of biology. Now with a new foreword by Richard Dawkins, Adaptation and Natural Selection is an essential text for understanding the nature of scientific debate.
NATURAL SELECTION AND ITS REPRESENTATION 2.1. Summaries and Recipes [The ''classical'' tradition; role of abstraction; Weismann, Lewontin, and Ridley; summaries in the form of recipes; two routes to understanding.] ...
Author: Peter Godfrey-Smith
Publisher: Oxford University Press
In 1859 Darwin described a deceptively simple mechanism that he called "natural selection," a combination of variation, inheritance, and reproductive success. He argued that this mechanism was the key to explaining the most puzzling features of the natural world. The exact nature of the Darwinian process has been controversial ever since. Draws on new developments in biology, philosophy of science, and other fields to give a new analysis and extension of Darwin's idea. The central concept used is that of a "Darwinian population," a collection of things with the capacity to undergo change by natural selection. From this starting point, new analyses of the role of genes in evolution, the application of Darwinian ideas to cultural change, and "evolutionary transitions" that produce complex organisms and societies are developed.
With culture, a new type of natural selection—Spencerian selection—emerges to supplement Darwinian natural selection. With the ability to think and plan using the symbols of culture comes the capacity to create new kinds of social ...
Author: Jonathan H. Turner
Category: Social Science
Kinship, religion, and economy were not "natural" to humans, nor to species of apes that had to survive on the African savanna. Society from its very beginnings involved an uneasy necessity that often stood in conflict with humans' ape ancestry; these tensions only grew along with later, more complex-eventually colossal-sociocultural systems. The ape in us was not extinguished, nor obviated, by culture; indeed, our ancestry continues to place pressures on individuals and their sociocultural creations. Not just an exercise in history, this pathbreaking book dispels many myths about the beginning of society to gain new understandings of the many pressures on societies today.
D mind that there are many unknown laws of correlation of growth , which , when one part of the organisation is modified through variation , and the modifications are accumulated by natural selection for the good of the being ...
greater difficulty in this being effected through natural selection, than in the cotton-planter increasing and improving by selection the down in the pods on his cottontrees. Natural selection may modify and adapt the larva of an insect ...
Many will exclaim that these several causes are amply sufficient wholly to stop the action of natural selection. I do not believe so. On the other hand, I do believe that natural selection will always act very slowly, often only at long ...
Sexual selection in a wild population of the butterfly , Danus chrysippus L . Science 187 : 664 - 665 . ... On the effects of selection on social insects . Q . Rev . ... Population size , natural selection , and the genetic load .
Author: Clifford Johnson
Category: Evolution (Biology)
Genetic systems and fitness; Evidence for selection; The balanced polymorphism, or th non-neutral equilibria; Selection coefficients in natural populations; Varying fitness and the unit of selection; Quantitative traits and the selection effect; Selection in retrospect and prospect.
Smith, J. Maynard. 1964. Group selection and kin selection. Nature, Lond. 201, 1145–6. Smith, J. Maynard. 1965. The evolution of alarm calls. Amer. Nat. 99, 59–63. Smith, J. Maynard. 1966. Sympatric speciation. Amer. Nat. 100, 637–50.
influenced by natural selection of four methods of generation advance studied . The single - seed - descent method might be the most useful method in controlled environments or winter nursery environments . A combination of natural ...
Author: Neal C Stoskopf
Publisher: CRC Press
This book attempts to present a readable format on plant breeding principles and their application, based on the collective experience of the three authors, but with a heavy dependence on the scientific literature. Modem pedagogy recognizes that teaching can occur when students are motivated to learn. Subject matter must be communicated in an interesting, appealing, and understandable fashion. In preparing the text, every effort has been made to translate pertinent plant breeding references into a clear, logical, and comprehensible format for those studying the challenging and dynamic field of plant breeding.