The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJ. Murray, 1920 - 432ÆäÀÌÁö |
µµ¼ º»¹®¿¡¼
90°³ÀÇ °á°ú Áß 1 - 5°³
xiii ÆäÀÌÁö
... hand , have believed that species undergo modification , and that the existing forms of life are the descendants by true generation of pre - exist- ing forms . Passing over allusions to the subject in the classical writers , * the first ...
... hand , have believed that species undergo modification , and that the existing forms of life are the descendants by true generation of pre - exist- ing forms . Passing over allusions to the subject in the classical writers , * the first ...
xxi ÆäÀÌÁö
... hand , we view ' Persistent Types ' in relation to that hypothesis which supposes the species living at any time to be the result of the gradual modification of pre - existing species a hypothesis which , though unproven , and sadly ...
... hand , we view ' Persistent Types ' in relation to that hypothesis which supposes the species living at any time to be the result of the gradual modification of pre - existing species a hypothesis which , though unproven , and sadly ...
6 ÆäÀÌÁö
... hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either definite or indefinite . They may be considered as definite when all or nearly all the offspring of ...
... hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either definite or indefinite . They may be considered as definite when all or nearly all the offspring of ...
7 ÆäÀÌÁö
... hand , we see domesticated animals and plants , though often weak and sickly , breeding freely under confinement ; and when , on the other hand , we see individuals , though taken young from state of nature perfectly tamed , long ...
... hand , we see domesticated animals and plants , though often weak and sickly , breeding freely under confinement ; and when , on the other hand , we see individuals , though taken young from state of nature perfectly tamed , long ...
28 ÆäÀÌÁö
... hand , nurserymen , from keeping large stocks of the same plant , are generally far more successful than amateurs in raising new and valuable varieties . A large number of individuals of an animal or plant can be reared only where the ...
... hand , nurserymen , from keeping large stocks of the same plant , are generally far more successful than amateurs in raising new and valuable varieties . A large number of individuals of an animal or plant can be reared only where the ...
±âŸ ÃâÆǺ» - ¸ðµÎ º¸±â
ÀÚÁÖ ³ª¿À´Â ´Ü¾î ¹× ±¸¹®
accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely fact favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamell©¡ larv©¡ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed tend theory tion variability variations varieties vary whilst whole wings young