On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJohn Murray, 1869 - 596페이지 |
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92개의 결과 중 1 - 5개
viii 페이지
... Causes of the sterility of first crosses and of hybrids - Parallelism between the effects of changed conditions of life and of crossing- Dimorphism and Trimorphism - Fertility of varieties when crossed and of their mongrel offspring not ...
... Causes of the sterility of first crosses and of hybrids - Parallelism between the effects of changed conditions of life and of crossing- Dimorphism and Trimorphism - Fertility of varieties when crossed and of their mongrel offspring not ...
xii 페이지
... causes of Variability . Limit of variation under domestication . On the great importance of individual differences , and on the unimportance of single variations . Wagner Moritz on the importance of isolation in the formation of species ...
... causes of Variability . Limit of variation under domestication . On the great importance of individual differences , and on the unimportance of single variations . Wagner Moritz on the importance of isolation in the formation of species ...
xv 페이지
... causes or means of the transformation of species , I need not here enter on details . Lamarck was the first man whose conclusions on the subject excited much attention . This justly - celebrated naturalist first pub- lished his views in ...
... causes or means of the transformation of species , I need not here enter on details . Lamarck was the first man whose conclusions on the subject excited much attention . This justly - celebrated naturalist first pub- lished his views in ...
xvi 페이지
... cause of change . He was cautious in drawing conclusions , and did not believe that existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que ...
... cause of change . He was cautious in drawing conclusions , and did not believe that existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que ...
xx 페이지
... Cause . " If we interpret these sentences given in the same Address , one by the other , it appears that this eminent philosopher felt in 1858 his confidence shaken that the Apteryx and the Red Grouse first appeared in their respective ...
... Cause . " If we interpret these sentences given in the same Address , one by the other , it appears that this eminent philosopher felt in 1858 his confidence shaken that the Apteryx and the Red Grouse first appeared in their respective ...
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자주 나오는 단어 및 구문
accumulated adapted affinities allied species America ancient appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt Edition eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occur oceanic islands offspring organisation parent perfect pigeons pistil pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations varieties vary vols whole widely