DarwinianEvolution-GrowthAndSurvival

DarwinianEvolution-GrowthAndSurvival - Darwinian Evolution:...

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4/17/11 Darwinian Evolution: Growth &
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4/17/11 Theories of Erasmus Darwin 1800 “All changes in the organic, as well as the inorganic world, are the result of natural Lama rck 1809 Acquired characteristics All life derived from one original ancestor There has been a slow evolutionary change in species from simple to more complex forms
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4/17/11 Natural Theology, 1802 William Paley
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Click to edit Master subtitle style 4/17/11 Charles Darwin 1859
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Click to edit Master subtitle style 4/17/11 Alfred Russel Wallace 1858
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4/17/11 A Mechanism for Can we doubt (remembering that many more individuals are born than can possibly survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and of procreating their kind?. .. This preservation of favourable variations I have called Natural Selection , or the Survival of the Fittest . By this process of descent with modification new species can arise by gradual change from pre-existing species T hus, species have descended from other species by insensibly fine gradations “The variations of a species, however slight, . .would affect, either favourably or adversely, prolonging existence. An antelope with shorter or weaker legs must necessarily suffer more from the attacks of carnivora. [Thus] any variety having slightly increased powers of preserving existence, will inevitably acquire a superiority in numbers. The continuation of varieties further and further from the original type-- appears [to have] no definite limit…. The superior variety would then alone remain, and would have replaced the original species .”
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4/17/11 Video: Darwin’s Dangerous Ide
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4/17/11 “Many more individuals are born than can possibly survive” Malthu
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DarwinianEvolution-GrowthAndSurvival - Darwinian Evolution:...

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