The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
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8 페이지
... experience , know that animals . which carry their 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 ...
... experience , know that animals . which carry their 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 ...
37 페이지
... experiences which the plastidules have acquired through adaptation in the course of their evolution . " I have shown that each organic form is the neces- sary product of two mechanical factors - an inner factor , heredity , and an outer ...
... experiences which the plastidules have acquired through adaptation in the course of their evolution . " I have shown that each organic form is the neces- sary product of two mechanical factors - an inner factor , heredity , and an outer ...
38 페이지
... experiences . Stated by itself , without explanation , this may seem to those who are unfamiliar with the sub- ject very much like nonsense , for the profound truth upon which it rests is not at all obvious at first sight . Herbert ...
... experiences . Stated by itself , without explanation , this may seem to those who are unfamiliar with the sub- ject very much like nonsense , for the profound truth upon which it rests is not at all obvious at first sight . Herbert ...
39 페이지
... experience of the dog and of his ancestors has taught him that such violent attacks are always associated with a disposition to commit still further violence , so , when the dog feels the blow he immediately performs actions which have ...
... experience of the dog and of his ancestors has taught him that such violent attacks are always associated with a disposition to commit still further violence , so , when the dog feels the blow he immediately performs actions which have ...
40 페이지
... experience , but experience depends upon " memory . So we may state , with truth , that in a certain sense , life is memory ; and as the power to re- produce its like is characteristic of all living things , we see that there is in ...
... experience , but experience depends upon " memory . So we may state , with truth , that in a certain sense , life is memory ; and as the power to re- produce its like is characteristic of all living things , we see that there is in ...
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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