Darwinism and Lamarckism, Old and New: Four LecturesDuckworth, 1899 - 169 стор. |
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Сторінка 3
... produced , and we have lost the leader who used to sift the facts and reasonings for us . Under these circumstances a few scientific agnostics have arisen , who declare they doubt everything ; but I fancy that most naturalists know ...
... produced , and we have lost the leader who used to sift the facts and reasonings for us . Under these circumstances a few scientific agnostics have arisen , who declare they doubt everything ; but I fancy that most naturalists know ...
Сторінка 13
... produced generation after generation by the action of climate or other external agent . It might then perhaps in time become definite and congenital , provided there is some process by which structural variations affect the germ - cells ...
... produced generation after generation by the action of climate or other external agent . It might then perhaps in time become definite and congenital , provided there is some process by which structural variations affect the germ - cells ...
Сторінка 15
... produce isolation of some individuals from others . The best case of physiological selec- tion is what the Rev. G. Henslow has called " Constitutional Selection , " which is a struggle for existence in which the sick and weakly give way ...
... produce isolation of some individuals from others . The best case of physiological selec- tion is what the Rev. G. Henslow has called " Constitutional Selection , " which is a struggle for existence in which the sick and weakly give way ...
Сторінка 17
... produced by the desire for accumu- lating wealth ; while the elimination of criminals from society by means of imprisonment is an example of the working of extrinsic selection . Extrinsic selection plays a very important part in social ...
... produced by the desire for accumu- lating wealth ; while the elimination of criminals from society by means of imprisonment is an example of the working of extrinsic selection . Extrinsic selection plays a very important part in social ...
Сторінка 33
... producing without con- straint a fertile progeny . " But no such definite boundary could be traced for the larger groups , such as genera , etc. It was generally agreed that , while species were natural groups - i . e . , real groups ...
... producing without con- straint a fertile progeny . " But no such definite boundary could be traced for the larger groups , such as genera , etc. It was generally agreed that , while species were natural groups - i . e . , real groups ...
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Darwinism and Lamarckism, Old and New: Four Lectures Frederick Wollaston Hutton Повний перегляд - 1899 |
Darwinism and Lamarckism, Old and New: Four Lectures Frederick Wollaston Hutton Повний перегляд - 1899 |
Darwinism and Lamarckism Old and New Frederick Wollaston Hutton Попередній перегляд недоступний - 2014 |
Загальні терміни та фрази
acquired characters action of external action of natural action of selection adapted animals and plants arise artificial selection become biology birds called cause cells Chatham Island colour congenital consequently Darwin definite variation despotism different species direct action divergent evolution domesticated doubt earth environment evidence explain external conditions extrinsic selection facts fancy pigeons favour fertile flatfish flowers gemmules genera genus germ-cells groups Herbert Spencer hypothesis idea important indefinite infertility inheritance insects island kinetogenesis Lamarck Lamarckians large number lecture living means mental variations modification Moritz Wagner natural selection naturalists Neo-Lamarckians North Island notochord number of individuals offspring opinion organic evolution organisation Origin of Species Pangenesis physical isolation physiological isolation plants and animals post-natal present principle of selection produced Professor progress Radiolarians reason recognition-marks says science of history structure struggle for existence suppose take place theory tion transmitted use-inheritance varieties vary vertebræ Zealand