The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
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81개의 결과 중 1 - 5개
5 페이지
... structural adjustments , the instincts , habits , and individual traits of its parents is one of the most wonderful phenomena of the material universe - Heredity is not due to the external conditions which act upon the ovum , but to ...
... structural adjustments , the instincts , habits , and individual traits of its parents is one of the most wonderful phenomena of the material universe - Heredity is not due to the external conditions which act upon the ovum , but to ...
6 페이지
... indeed . Still we are able to show that the machinery exists ; and anatomy , or the study of structure , goes hand in hand with the study of the bodily and mental activities of animals . We do not under- в Heredity .
... indeed . Still we are able to show that the machinery exists ; and anatomy , or the study of structure , goes hand in hand with the study of the bodily and mental activities of animals . We do not under- в Heredity .
7 페이지
... structure . of the dog , an explanation of all that fits the dog for his life ; an explanation as satisfactory as that which a savage might reach , in the case of the steamboat , by studying its anatomy . Let our savage find , however ...
... structure . of the dog , an explanation of all that fits the dog for his life ; an explanation as satisfactory as that which a savage might reach , in the case of the steamboat , by studying its anatomy . Let our savage find , however ...
8 페이지
... structure of the new animal is due to these condi- tions ; that the embryo becomes a dog because it is bathed by a dog's blood , nourished through a dog's body , and is completely surrounded by influences which are peculiar to dog ...
... structure of the new animal is due to these condi- tions ; that the embryo becomes a dog because it is bathed by a dog's blood , nourished through a dog's body , and is completely surrounded by influences which are peculiar to dog ...
9 페이지
... structure and instincts , by virtue of something which it contained when it left the ovary of its mother . It is true that it is not left quite to itself , but is carefully attended and cared for by other bees ; but everything which ...
... structure and instincts , by virtue of something which it contained when it left the ovary of its mother . It is true that it is not left quite to itself , but is carefully attended and cared for by other bees ; but everything which ...
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acquired action adult alike allied species ancestor ancestral form asexual asexual reproduction become birds body breed characteristics color common conclusion confined crossing crustacea Daphnia Darwin Darwin says descendants domesticated animals domesticated pigeons embryo epigenesis evolution existence experience explanation fact female fertilized fortuitous fowls functions furnishes gemmules genera genus germ germinative vesicle give rise gradually greatly hereditary homology horns hybrid hydroids hypothesis individual influence inherited insects latent male cell male element males of allied medusa ment modification natural selection offspring ordinary origin origin of species ovum pangenesis parent parthenogenesis peculiarities perfect phenomena plants plastidules plumage present produced pure race reasons for believing reciprocal crosses reproductive elements resemblance result secondary sexual characters sexes sexual elements sexual reproduction sexual selection similar simply striped structure tendency to vary theory of heredity throw off gemmules tion transmission transmit true variable various young