Are the Effects of Use and Disuse Inherited?: An Examination of the View Held by Spencer and DarwinMacmillan, 1890 - 156 páginas |
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Página v
... . Francis Darwin is to me the more precious , and the more worthy of grateful recog- nition , from the fact that my general conclu- sion that acquired characters are not inherited is at variance with the opinion of his revered father ,
... . Francis Darwin is to me the more precious , and the more worthy of grateful recog- nition , from the fact that my general conclu- sion that acquired characters are not inherited is at variance with the opinion of his revered father ,
Página vi
... father , who aided his great theory by the retention of some remains of Lamarck's doctrine of the in- herited effect of habit . I feel as if the son , as representative of his great progenitor , were carry- ing out the idea of an ...
... father , who aided his great theory by the retention of some remains of Lamarck's doctrine of the in- herited effect of habit . I feel as if the son , as representative of his great progenitor , were carry- ing out the idea of an ...
Página 32
... fathers ( p . 19 ) . But these great musicians inherited far more than their parents possessed . The excess of their powers beyond their parents ' must surely be attributed to spontaneous variation ; and who shall say that the rest was ...
... fathers ( p . 19 ) . But these great musicians inherited far more than their parents possessed . The excess of their powers beyond their parents ' must surely be attributed to spontaneous variation ; and who shall say that the rest was ...
Página 33
... herited at this early age ? If use - inheritance was not necessary in the case of Handel , whose father was a surgeon , why is it needed to account for Bach ? D LACK OF EVIDENCE . The " direct proofs " of ESTHETIC FACULTIES . 33.
... herited at this early age ? If use - inheritance was not necessary in the case of Handel , whose father was a surgeon , why is it needed to account for Bach ? D LACK OF EVIDENCE . The " direct proofs " of ESTHETIC FACULTIES . 33.
Página 44
... father's sunburnt complexion or smooth - shaven face . Of course atavism ultimately adopts many instances of revolt against its sway . But to assume that these changes of type follow the personal change rather than cause it , is to ...
... father's sunburnt complexion or smooth - shaven face . Of course atavism ultimately adopts many instances of revolt against its sway . But to assume that these changes of type follow the personal change rather than cause it , is to ...
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Términos y frases comunes
acquired characters acquired modifications alleged Animals and Plants appears artificial selection atavism attributed Aylesbury duck become birds bones breeds cause cent civilization concomitant variation Contemporary Review Crown 8vo cumulative Darwin Descent deterioration diminished diminution diseases domestic animals domestic rabbit duck effects of ancestral effects of disuse enlarged epilepsy evidence evil explanation eyes fact factor of evolution fancy pigeons father favoured Francis Darwin Francis Galton Galton gemmules guinea-pigs heredity Illustrations improvement incisors increased individual inherited effects inherited injuries inherited mutilations insects instances instincts jaws Lamarckian leg-bones legs lengthened muscles natural or artificial natural selection nervous neuter offspring organs Origin of Species pangenesis panmixia parents pigeons Plants under Domestication quasi-inheritance race Ray Lankester reduced wings relative reproductive elements sexual selection shortened Spencer spite of disuse spontaneous variations sternum structure suppose tameness teeth tend tendency theory thickened sole tion toes transmit true inheritance use-inheritance Variation of Animals weight Weismann wing-bones
Pasajes populares
Página 26 - For peculiar habits confined to the workers or sterile females, however long they might be followed, could not possibly affect the males and fertile females, which alone leave descendants. I am surprised that no one has hitherto advanced this demonstrative case of neuter insects, against the well-known doctrine of inherited habit, as advanced by Lamarck.