The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life: Reprinted from the Sixth London EditionBurt, 1890 - 538ÆäÀÌÁö |
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41 ÆäÀÌÁö
... naturalists have honestly confessed ) which do not vary ; and , under this point of view , no instance will ever be found of an important part varying ; but under any other point of view many instances assuredly can be given . There is ...
... naturalists have honestly confessed ) which do not vary ; and , under this point of view , no instance will ever be found of an important part varying ; but under any other point of view many instances assuredly can be given . There is ...
43 ÆäÀÌÁö
... naturalists do not like to rank them as distinct species , are in several respects the most important for us . We ... naturalists having sound judgment and wide experience seems the only guide to follow . We must , however , in many ...
... naturalists do not like to rank them as distinct species , are in several respects the most important for us . We ... naturalists having sound judgment and wide experience seems the only guide to follow . We must , however , in many ...
498 ÆäÀÌÁö
... naturalists have of late published their belief that a multitude of reputed species in each genus are not real species ; but that other species are real , that is , have been independently created . This seems to me a strange conclusion ...
... naturalists have of late published their belief that a multitude of reputed species in each genus are not real species ; but that other species are real , that is , have been independently created . This seems to me a strange conclusion ...
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adapted admit affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied color continued crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favorable females fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate intervals kind lamell©¡ larv©¡ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest oceanic islands offspring organs parent peculiar perfect pigeons pistil pollen present principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive suppose tend theory tion trees variability variations varieties vary whole widely different wings young