The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
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55개의 결과 중 1 - 5개
11 페이지
... offspring thus produced inherit , like those developed from eggs , all the characteristics of the parent . This then is the problem of heredity , certainly one of the grandest secrets of nature . When we reflect upon its obscurity and ...
... offspring thus produced inherit , like those developed from eggs , all the characteristics of the parent . This then is the problem of heredity , certainly one of the grandest secrets of nature . When we reflect upon its obscurity and ...
18 페이지
... offspring are more va- riable than when the same hybrid is used as the mother and either pure parent - species or the same third species as the father . There may perhaps be other requisites which should be included in this list , but I ...
... offspring are more va- riable than when the same hybrid is used as the mother and either pure parent - species or the same third species as the father . There may perhaps be other requisites which should be included in this list , but I ...
26 페이지
... offspring positions like those which they occupied in the parent . This is essentially an evolution hypothesis , but it is logically complete , since it accounts for the pro- duction of successive generations without the necessity for ...
... offspring positions like those which they occupied in the parent . This is essentially an evolution hypothesis , but it is logically complete , since it accounts for the pro- duction of successive generations without the necessity for ...
50 페이지
... offspring of a similar unit in the body of a parent or of a more remote ances- tor . The cells of the body of one of the higher organ- isms are not only morphologically but actually indepen- dent individuals , reproducing themselves ...
... offspring of a similar unit in the body of a parent or of a more remote ances- tor . The cells of the body of one of the higher organ- isms are not only morphologically but actually indepen- dent individuals , reproducing themselves ...
53 페이지
... offspring . Into the bodies of eighteen of these silver - gray rabbits he transfused the blood of other vari- eties , in some cases replacing one half of the blood . From the eighteen rabbits thus operated upon eighty - six young were ...
... offspring . Into the bodies of eighteen of these silver - gray rabbits he transfused the blood of other vari- eties , in some cases replacing one half of the blood . From the eighteen rabbits thus operated upon eighty - six young were ...
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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