The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
도서 본문에서
39개의 결과 중 1 - 5개
8 페이지
... young inside their bodies are excep- tions , and that the organization of the future animal must exist potentially in the egg , since the conditions to which it is exposed cannot possibly have any tendency to produce from it a being ...
... young inside their bodies are excep- tions , and that the organization of the future animal must exist potentially in the egg , since the conditions to which it is exposed cannot possibly have any tendency to produce from it a being ...
10 페이지
... young dog , and declared that he was the image of his old pointer bitch , Sappho , the only blue and white pointer of pure descent which he had ever seen . This led to close inquiry , and it was proved that he was the great- great ...
... young dog , and declared that he was the image of his old pointer bitch , Sappho , the only blue and white pointer of pure descent which he had ever seen . This led to close inquiry , and it was proved that he was the great- great ...
43 페이지
... young embryo as embryonic ova or spermatozoa , and that , as the embryo grows up , the reproductive cells gradually ... young before it has reached full maturity and before it has acquired all the characteristics of the species , the ...
... young embryo as embryonic ova or spermatozoa , and that , as the embryo grows up , the reproductive cells gradually ... young before it has reached full maturity and before it has acquired all the characteristics of the species , the ...
53 페이지
... young were produced , and in no case did the offspring exhibit any of the characteristics of the variety from which the blood was taken , but all of the eighty - six were pure silver gray . From these experiments Galton concludes that ...
... young were produced , and in no case did the offspring exhibit any of the characteristics of the variety from which the blood was taken , but all of the eighty - six were pure silver gray . From these experiments Galton concludes that ...
57 페이지
... young females , and that the isolation of these young specimens has no more ef- fect upon their fertility than it had in the case of their mother , but that they continue to reproduce for an in- definite number of generations when all ...
... young females , and that the isolation of these young specimens has no more ef- fect upon their fertility than it had in the case of their mother , but that they continue to reproduce for an in- definite number of generations when all ...
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자주 나오는 단어 및 구문
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