Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 103
... relation between flight and the pneumaticity of bones , which naturally proceeds from the greater lightness of a pneu- matic bone as compared to a solid one , yet pneumaticity itself arose earlier than the ancestors of birds acquired ...
... relation between flight and the pneumaticity of bones , which naturally proceeds from the greater lightness of a pneu- matic bone as compared to a solid one , yet pneumaticity itself arose earlier than the ancestors of birds acquired ...
Стр. 147
... relation to their possible significance in the struggle for life .... Everywhere in nature , in geological periods as well as at present , the morphological characters of newly originated types have no special significance in the ...
... relation to their possible significance in the struggle for life .... Everywhere in nature , in geological periods as well as at present , the morphological characters of newly originated types have no special significance in the ...
Стр. 161
... relationship or " community of descent " is " the one known cause of close similarity in organic beings . " 1 We shall ... relation- ship . Here we may confine ourselves to one example , i.e. the resemblance long ago detected in the ...
... relationship or " community of descent " is " the one known cause of close similarity in organic beings . " 1 We shall ... relation- ship . Here we may confine ourselves to one example , i.e. the resemblance long ago detected in the ...
Содержание
THE STRUGGLE FOR EXISTENCE AND NATURAL | 1 |
Various types of the struggle for existence | 45 |
Is survival a privilege of the bearers of useful | 62 |
Авторские права | |
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Часто встречающиеся слова и выражения
Abel accidental according adapted adult allied America ammonites amphibians ancestors angiosperms Animals and Plants appear belonging Bennettitales birds bones butterflies Carinatae chance chap characters colour common complex Craniata Cretaceous Crossopterygii Darwin definite direction derived determined direction dicotyledons dinosaurs Dipnoi dorsal due to convergence embryo evolution exhibit external extinct female fins fishes formation forms Fürbringer genera genus groups gymnosperms hind-limbs independently insects instance Kuznetzov lamarckiana latter living Lotsy lower male mammals manifested means mimicry Monochlamydeae monocotyledons mutations natural selection number of individuals observed occur ontogeny opinion organisation Origin of Species Ornithischia orthogenesis Osborn parallel pectoral peculiar phenomena phylogeny Piperales placenta Placentalia Polycarpicae polyphyletic polyphyletic origin possess primitive produced Pseudosuchia pterosaurs Ratitae referred regarded remarkable reptiles resemblance Russian Saurischia says seeds shell similar skull structure struggle for existence sub-species teeth Teleostomi tendency tetrapods theory tion transformation varieties Vavilov vertebrates Vries wings