The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
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23개의 결과 중 1 - 5개
12 페이지
... to their inmost depths , but I hope to show that observation and reflection do enable us to discover some of the laws upon which heredity depends , and do furnish us with at least a partial solution of the problem ; that we 12 Heredity .
... to their inmost depths , but I hope to show that observation and reflection do enable us to discover some of the laws upon which heredity depends , and do furnish us with at least a partial solution of the problem ; that we 12 Heredity .
15 페이지
... furnishes a basis or founda- tion for the theory of natural selection , and removes the most serious difficulties which have been urged against the latter theory . I shall then show that there is no a priori reason for rejecting the ...
... furnishes a basis or founda- tion for the theory of natural selection , and removes the most serious difficulties which have been urged against the latter theory . I shall then show that there is no a priori reason for rejecting the ...
51 페이지
... furnishes an explanation of most of the phenomena which he attempts to interpret by it , although it seems possible that there may be a simpler explanation . If the existence of the gemmules were proven we could under- stand not only ...
... furnishes an explanation of most of the phenomena which he attempts to interpret by it , although it seems possible that there may be a simpler explanation . If the existence of the gemmules were proven we could under- stand not only ...
52 페이지
... furnishes no analogy for attributing to such small particles the vital properties which we know only in bodies which are comparatively gigantic . It is also urged that the gemmules must be endowed with entirely imaginary and wonderfully ...
... furnishes no analogy for attributing to such small particles the vital properties which we know only in bodies which are comparatively gigantic . It is also urged that the gemmules must be endowed with entirely imaginary and wonderfully ...
55 페이지
... furnish the severely exact proofs which have been given us by more modern naturalists ; but he gives many reasons for suspecting that the unfertilized eggs of the honey - bee may give rise to perfect animals without sexual union ; and ...
... furnish the severely exact proofs which have been given us by more modern naturalists ; but he gives many reasons for suspecting that the unfertilized eggs of the honey - bee may give rise to perfect animals without sexual union ; and ...
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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