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 vii
... Natural Selection without providing an efficient substitute for preventing degeneracy . The sub- stitute on which moralists and legislators rely- if they think on the matter at all - is the cumulative inheritance of the beneficial ...
... Natural Selection without providing an efficient substitute for preventing degeneracy . The sub- stitute on which moralists and legislators rely- if they think on the matter at all - is the cumulative inheritance of the beneficial ...
Página ix
... 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.
... 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
... SELECTION 82 SIMILAR EFFECTS OF NATURAL SELECTION AND USE - INHERITANCE INFERIORITY OF SENSES IN EUROPEANS . 83 • • 85 SHORT - SIGHT IN WATCHMAKERS AND ENGRAVERS 85 LARGER HANDS IN LABOURERS ' INFANTS THICKENED SOLE IN INFANTS 87 888 A ...
... SELECTION 82 SIMILAR EFFECTS OF NATURAL SELECTION AND USE - INHERITANCE INFERIORITY OF SENSES IN EUROPEANS . 83 • • 85 SHORT - SIGHT IN WATCHMAKERS AND ENGRAVERS 85 LARGER HANDS IN LABOURERS ' INFANTS THICKENED SOLE IN INFANTS 87 888 A ...
Página xi
... NATURAL SELECTION FAVOUR USE- INHERITANCE ? . USE - INHERITANCE AN EVIL VARIED EFFECTS OF USE AND DISUSE USE - INHERITANCE IMPLIES PANGENESIS PANGENESIS IMPROBABLE . · • · · 127 128 134 137 • · 138 SPENCER'S EXPLANATION OF USE ...
... NATURAL SELECTION FAVOUR USE- INHERITANCE ? . USE - INHERITANCE AN EVIL VARIED EFFECTS OF USE AND DISUSE USE - INHERITANCE IMPLIES PANGENESIS PANGENESIS IMPROBABLE . · • · · 127 128 134 137 • · 138 SPENCER'S EXPLANATION OF USE ...
Página 4
... natural or artificial selection . Herbert Spencer maintains that the effects of use and disuse are inherited in kind , and in his Factors of Organic Evolution1 he has supported his contention with a selection of facts and reason- ings ...
... natural or artificial selection . Herbert Spencer maintains that the effects of use and disuse are inherited in kind , and in his Factors of Organic Evolution1 he has supported his contention with a selection of facts and reason- ings ...
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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.