The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
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3 페이지
... various wild and domesticated species can be reared to maturity . My own studies have been in a different province of natural science , and it has therefore seemed best to publish this volume in order to call renewed attention to this ...
... various wild and domesticated species can be reared to maturity . My own studies have been in a different province of natural science , and it has therefore seemed best to publish this volume in order to call renewed attention to this ...
6 페이지
... various as the attributes of each ani- mal are , however , they are not mysterious ; for , at the same time that we discover in an organism the power to do wonderful things , we also find in it a material organi- zation , a mechanism ...
... various as the attributes of each ani- mal are , however , they are not mysterious ; for , at the same time that we discover in an organism the power to do wonderful things , we also find in it a material organi- zation , a mechanism ...
16 페이지
... various forms of asexual generation and from ova . 2. Ova may develop , in certain cases , without fertili- zation . 3. As a rule the ovum does not develop into a new or- ganism until it has been fertilized by union with a male cell . 4 ...
... various forms of asexual generation and from ova . 2. Ova may develop , in certain cases , without fertili- zation . 3. As a rule the ovum does not develop into a new or- ganism until it has been fertilized by union with a male cell . 4 ...
18 페이지
... various forms of reproduction , cell - multiplication , fission , gemmation , conjugation , sexual reproduction , and parthenogenesis , are inter - re- lated in such a way that we must believe that they are different manifestations of ...
... various forms of reproduction , cell - multiplication , fission , gemmation , conjugation , sexual reproduction , and parthenogenesis , are inter - re- lated in such a way that we must believe that they are different manifestations of ...
19 페이지
... various forms of reproduction , rather than the cause of what they have in common . The phenomena of heredity in the higher animals , as well as the mechanism of ova and male cells through which these phenomena are manifested , have ...
... various forms of reproduction , rather than the cause of what they have in common . The phenomena of heredity in the higher animals , as well as the mechanism of ova and male cells through which these phenomena are manifested , have ...
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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