Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página vii
... effects of artificial selection , we proceed at once to explain how natural selection acts . Among the subjects of novelty or interest discussed in this volume , and which have important bearings on the theory of natural selection , are ...
... effects of artificial selection , we proceed at once to explain how natural selection acts . Among the subjects of novelty or interest discussed in this volume , and which have important bearings on the theory of natural selection , are ...
Página x
... Effect of struggle for existence under unchanged conditions - The effect under change of conditions - Divergence of character - In insects - In birds - In mammalia - Divergence leads to a maximum of life in each area - Closely allied ...
... Effect of struggle for existence under unchanged conditions - The effect under change of conditions - Divergence of character - In insects - In birds - In mammalia - Divergence leads to a maximum of life in each area - Closely allied ...
Página xi
... effects of intercrossing - Isolation as prevent- ing intercrossing - Gulick on the effects of isolation - Cases in which isolation is ineffective Pages 126-151 • CHAPTER VII ON THE INFERTILITY OF CROSSES BETWEEN DISTINCT SPECIES AND THE ...
... effects of intercrossing - Isolation as prevent- ing intercrossing - Gulick on the effects of isolation - Cases in which isolation is ineffective Pages 126-151 • CHAPTER VII ON THE INFERTILITY OF CROSSES BETWEEN DISTINCT SPECIES AND THE ...
Página xii
... effect on the females - Display of decorative plumage by the males - A theory of animal coloration - The origin of accessory plumes - Development of accessory plumes and their display - The effect of female preference will be ...
... effect on the females - Display of decorative plumage by the males - A theory of animal coloration - The origin of accessory plumes - Development of accessory plumes and their display - The effect of female preference will be ...
Página xiv
... effects of withdrawal of natural selection - Supposed effects of disuse among wild animals - Difficulty as to co - adaptation of parts by variation and selection -- Direct action of the environment The American school of evolutionists ...
... effects of withdrawal of natural selection - Supposed effects of disuse among wild animals - Difficulty as to co - adaptation of parts by variation and selection -- Direct action of the environment The American school of evolutionists ...
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Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection Alfred Russel Wallace Visualização integral - 1890 |
Palavras e frases frequentes
abundant adapted adduced allied species America amount animals and plants appears birds breed brilliant butterflies cause characters climate closely allied colours of animals common concealment conspicuous continued cross-fertilisation crossed curious Darwin dicotyledons distinct species domestic animals effects eggs enemies Eocene evidence extinct facts faculty favourable female fertile fertilised flowers genera genus geological groups habits hybrids important increase individuals infertility inhabit insects intercrossing kind larva larvæ less living male mammalia mammals markings marsupials mimicry Miocene mode modified moths natural selection naturalists nests occur offspring organs Origin of Species peculiar pigeons Pliocene pollen portion possess probably produced Professor protectively coloured pupa regions remarkable resemblance seeds self-fertilisation Silurian similar specimens spots sterility structure struggle for existence supposed tail theory tints tion toes trees tropical usually variability variation varied varieties vegetation warning colours whole wild wings Zealand