On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 |
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23개의 결과 중 1 - 5개
vi 페이지
... follow the same general rules in their ap- pearance and disappearance as do 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 ...
... follow the same general rules in their ap- pearance and disappearance as do 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 ...
20 페이지
... follow to a certain extent , as might have been expected , systematic affinity , by which term every kind of resem- blance and dissimilarity between organic beings is at- tempted to be expressed . The facts by no means seem to indicate ...
... follow to a certain extent , as might have been expected , systematic affinity , by which term every kind of resem- blance and dissimilarity between organic beings is at- tempted to be expressed . The facts by no means seem to indicate ...
21 페이지
... follow as a necessary contingency . In the second place , it is almost as much opposed to the theory of natural selection as to that of special creation , that in reciprocal crosses the male element of one form should have been rendered ...
... follow as a necessary contingency . In the second place , it is almost as much opposed to the theory of natural selection as to that of special creation , that in reciprocal crosses the male element of one form should have been rendered ...
42 페이지
... follow according to Gärtner the same laws . When two species are crossed , one has sometimes a prepotent power of impressing its likeness on the hybrid . So I believe it to be with varieties of plants ; and with animals one variety cer ...
... follow according to Gärtner the same laws . When two species are crossed , one has sometimes a prepotent power of impressing its likeness on the hybrid . So I believe it to be with varieties of plants ; and with animals one variety cer ...
44 페이지
... follow systematic affinity , but is governed by several curious and complex laws . It is generally different , and sometimes widely different in re- ciprocal crosses between the same two species . It is not always equal in degree in a ...
... follow systematic affinity , but is governed by several curious and complex laws . It is generally different , and sometimes widely different in re- ciprocal crosses between the same two species . It is not always equal in degree in a ...
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자주 나오는 단어 및 구문
admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds Cambrian changes characters cies classification climate closely allied common progenitor continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo eral Europe existing extinct fact faunas fertilised fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs sediment seeds Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory tion variations varieties whilst widely different wings