Climbing Mount Improbable by Richard Dawkins

Climbing Mount Improbable



Download Climbing Mount Improbable




Climbing Mount Improbable Richard Dawkins
Language: English
Page: 0
Format: epub
ISBN: 0393316823, 9780393316827
Publisher: W. W. Norton & Company

How do species evolve? Richard Dawkins, one of the world's most eminent zoologists, likens the process to scaling a huge, Himalaya-size peak, the Mount Improbable of his title. An alpinist does not leap from sea level to the summit; neither does a species utterly change forms overnight, but instead follows a course of "slow, cumulative, one-step-at-a-time, non-random survival of random variants"--a course that Charles Darwin, Dawkins's great hero, called natural selection. Illustrating his arguments with case studies from the natural world, such as the evolution of the eye and the lung, and the coevolution of certain kinds of figs and wasps, Dawkins provides a vigorous, entertaining defense of key Darwinian ideas. While an enzyme molecule or an eye might seem supremely improbable in their complexity, they are not accidental, nor need we assume that they are the designed handiwork of a Creator, asserts Oxford biologist Dawkins (The Selfish Gene). This foremost neo-Darwinian exponent explains the dazzling array of living things as the result of natural selection?the slow, cumulative, one-step-at-a-time, non-random survival of chance variants. Both a frontal assault on creationism and an enthralling tour of the natural world, this beautifully illustrated study is based on a set of BBC lectures, imparting a tone at once conversational and magisterial. Dawkins explores how ordered complexity arose by discussing spiders' web-building techniques, the gradual evolution of elephant trunks and of wings (birds, he concludes, evolved from two-legged dinosaurs, not from tree gliders) and the symbiotic relationship between the 900 species of figs and their sole genetic companions, the miniature wasps that pollinate specific fig species. Using "computer biomorphs" (simulated creatures "bred" from a common ancestor), Dawkins demonstrates how varieties of the same plant or animal species can vary in shape because of differences in just a few genes. Author tour.
Copyright 1996 Reed Business Information, Inc. --This text refers to the edition. MORE EBOOKS:
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