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
... Heredity ) , and to Professor Romanes , for the help afforded by their kindly suggestions and criticisms , and for the advice and recommendation under which this essay is now published . Encourage- ment from Mr. Francis Darwin is to me ...
... Heredity ) , and to Professor Romanes , for the help afforded by their kindly suggestions and criticisms , and for the advice and recommendation under which this essay is now published . Encourage- ment from Mr. Francis Darwin is to me ...
Página vi
... rejection by so great an authority on heredity as Francis Galton . The sociological importance of the subject has already been insisted on in emphatic terms by Mr. Herbert Spencer , and this importance may be even vi PREFACE .
... rejection by so great an authority on heredity as Francis Galton . The sociological importance of the subject has already been insisted on in emphatic terms by Mr. Herbert Spencer , and this importance may be even vi PREFACE .
Página 38
... heredity alone would transmit nervousness to their children . ( 3 ) The shattered nerves or insanity resulting from alcoholic and other excesses , or from over- work or trouble , are evidently signs of a gráve constitutional injury ...
... heredity alone would transmit nervousness to their children . ( 3 ) The shattered nerves or insanity resulting from alcoholic and other excesses , or from over- work or trouble , are evidently signs of a gráve constitutional injury ...
Página 44
... as a broad principle , but it has many exceptions , and the non - heredity of acquired characters may be one of them . DARWIN'S EXAMPLES . THE most formidable cases brought forward by 44 ARE THE EFFECTS OF USE INHERITED ?
... as a broad principle , but it has many exceptions , and the non - heredity of acquired characters may be one of them . DARWIN'S EXAMPLES . THE most formidable cases brought forward by 44 ARE THE EFFECTS OF USE INHERITED ?
Página 46
... extent at least he strongly impressed the belief in the inheritance 1 Weismann's Essays on Heredity & c . Clarendon Press , of acquired characters upon his children's minds.1 Darwin must also 1889 . 46 ARE THE EFFECTS OF USE INHERITED ?
... extent at least he strongly impressed the belief in the inheritance 1 Weismann's Essays on Heredity & c . Clarendon Press , of acquired characters upon his children's minds.1 Darwin must also 1889 . 46 ARE THE EFFECTS OF USE INHERITED ?
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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.