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 viii
... evidence on either side can never be absolutely conclusive , and where , especially , the absolute demonstration of a universal negative cannot reasonably be expected . PREFACE CONTENTS . IMPORTANCE INQUIRY .. AND BEARING OF THE viii ...
... evidence on either side can never be absolutely conclusive , and where , especially , the absolute demonstration of a universal negative cannot reasonably be expected . PREFACE CONTENTS . IMPORTANCE INQUIRY .. AND BEARING OF THE viii ...
Página ix
... GIRAFFE , AND NECESSITY FOR CONCOMI- TANT VARIATION . ALLEGED RUINOUS SELECTION .. • EFFECTS OF NATURAL ADVERSE CASE OF NEUTER INSECTS ÆSTHETIC FACULTIES b 18 • 23 24 29 LACK OF EVIDENCE INHERITED EPILEPSY IN GUINEA - PIGS INHERITED.
... GIRAFFE , AND NECESSITY FOR CONCOMI- TANT VARIATION . ALLEGED RUINOUS SELECTION .. • EFFECTS OF NATURAL ADVERSE CASE OF NEUTER INSECTS ÆSTHETIC FACULTIES b 18 • 23 24 29 LACK OF EVIDENCE INHERITED EPILEPSY IN GUINEA - PIGS INHERITED.
Página x
... EVIDENCE INHERITED EPILEPSY IN GUINEA - PIGS INHERITED INSANITY AND NERVOUS DISORDERS INDIVIDUAL AND TRANSMISSIBLE TYPE NOT MODIFIED ALIKE · PAGE 34 35 36 40 DARWIN'S EXAMPLES 45-100 REDUCED WINGS OF BIRDS OF OCEANIC ISLANDS DROOPING ...
... EVIDENCE INHERITED EPILEPSY IN GUINEA - PIGS INHERITED INSANITY AND NERVOUS DISORDERS INDIVIDUAL AND TRANSMISSIBLE TYPE NOT MODIFIED ALIKE · PAGE 34 35 36 40 DARWIN'S EXAMPLES 45-100 REDUCED WINGS OF BIRDS OF OCEANIC ISLANDS DROOPING ...
Página 28
... evidence cannot be rendered almost indisputable by the exceptional exclusion of the modified animal from the work of reproduction . Ants and bees seem to be capable of altering their habits and methods of action much as men do . Bees ...
... evidence cannot be rendered almost indisputable by the exceptional exclusion of the modified animal from the work of reproduction . Ants and bees seem to be capable of altering their habits and methods of action much as men do . Bees ...
Página 33
... in- 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.
... in- 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.
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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.