Darwinism and Lamarckism, Old and New: Four LecturesDuckworth, 1899 - 169 стор. |
З цієї книги
Результати 1-5 із 22
Сторінка 72
... colour , and by having two black bands on each wing and one on the tail . Everyone knows that some of the races of fancy pigeons have none of these characters . Some are pure white ; some pure black ; and several races are known to have ...
... colour , and by having two black bands on each wing and one on the tail . Everyone knows that some of the races of fancy pigeons have none of these characters . Some are pure white ; some pure black ; and several races are known to have ...
Сторінка 73
Four Lectures Frederick Wollaston Hutton. of pigeons are crossed , no matter what their colour may be , the young almost always , and in the sec- ond cross always , show a tendency to become blue and to have two black bars on the wings ...
Four Lectures Frederick Wollaston Hutton. of pigeons are crossed , no matter what their colour may be , the young almost always , and in the sec- ond cross always , show a tendency to become blue and to have two black bars on the wings ...
Сторінка 75
... colour or form shows an alteration , then variations will be abundant , and generally in many directions . Everyone knows with what rapidity new varieties of flowers are introduced by gardeners , when once the strict rule of inheritance ...
... colour or form shows an alteration , then variations will be abundant , and generally in many directions . Everyone knows with what rapidity new varieties of flowers are introduced by gardeners , when once the strict rule of inheritance ...
Сторінка 76
... Colour is generally more variable than form ; but the opposite may be the case in some species . Again , variation in one part is some- times accompanied by variation in another part : for example , in pigeons the beak and feet vary ...
... Colour is generally more variable than form ; but the opposite may be the case in some species . Again , variation in one part is some- times accompanied by variation in another part : for example , in pigeons the beak and feet vary ...
Сторінка 89
... colour or of form , which are called non - utilitarian because they are not of any use to their possessors . Darwin always saw this difficulty ; but at first he thought that it would be overcome . In the first edition of the Origin of ...
... colour or of form , which are called non - utilitarian because they are not of any use to their possessors . Darwin always saw this difficulty ; but at first he thought that it would be overcome . In the first edition of the Origin of ...
Інші видання - Показати все
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 selection adapted Ampelopsis animals and plants arise artificial selection become biology birds brought called cause cells colour compensation of growth congenital consequently Darwin definite variation despotism direct action divergent evolution doubt elongated environment evidence existence explain external conditions extrinsic selection facts favour flatfish flowers G. H. Lewes gemmules genera genus germ-cells groups Henslow Herbert Spencer hypothesis idea important indefinite infertility inherited insects island kinetogenesis Lamarck Lamarckians large number living means mental variations modification Moritz Wagner movements nation natural selection naturalists Neo-Lamarckians notochord number of individuals offspring opinion organic evolution organisation Origin of Species Pangenesis physical Physiogenesis plants and animals principle of compensation principle of selection produced Professor progress Radiolarians reason result says science of history seems sterility structure suppose take place theory tion transmission transmitted tribe use-inheritance varieties vertebræ Weismann Zealand