The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJ. Murray, 1920 - 432ÆäÀÌÁö |
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... single species - On extinction -- On simultaneous changes in the forms of life throughout the world - On the affinities of extinct species to each other and to living species - On the state of development of ancient forms -On the ...
... single species - On extinction -- On simultaneous changes in the forms of life throughout the world - On the affinities of extinct species to each other and to living species - On the state of development of ancient forms -On the ...
xv ÆäÀÌÁö
... Single Vision ' appeared in 1818. In this paper he distinctly recognises the principle of natural selection , and this is the first recognition which has been indicated ; but he applies it only to the races of man , and to certain ...
... Single Vision ' appeared in 1818. In this paper he distinctly recognises the principle of natural selection , and this is the first recognition which has been indicated ; but he applies it only to the races of man , and to certain ...
xxi ÆäÀÌÁö
... single parent - form . In June , 1859 , Professor Huxley gave a lecture before the Royal Institution on the ' Persistent Types of Animal Life . ' Referring to such cases , he remarks , " It is difficult to comprehend the meaning of such ...
... single parent - form . In June , 1859 , Professor Huxley gave a lecture before the Royal Institution on the ' Persistent Types of Animal Life . ' Referring to such cases , he remarks , " It is difficult to comprehend the meaning of such ...
7 ÆäÀÌÁö
... single bud with a new and sometimes widely different character from that of the other buds on the same plant . These bud - variations , as they may be named , can be pro- • pagated by grafts , offsets , etc. , and sometimes CHAP . I ...
... single bud with a new and sometimes widely different character from that of the other buds on the same plant . These bud - variations , as they may be named , can be pro- • pagated by grafts , offsets , etc. , and sometimes CHAP . I ...
8 ÆäÀÌÁö
... single bud out of the many thousands , produced year after year on the same tree under uniform conditions , has been known suddenly to assume a new character ; and as buds on distinct trees , growing under different conditions , have ...
... single bud out of the many thousands , produced year after year on the same tree under uniform conditions , has been known suddenly to assume a new character ; and as buds on distinct trees , growing under different conditions , have ...
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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