Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 83
... organisation ; for of all the gymnosperms now living , with the exception of Welwitschia ( and of some other Gnetales and some cycads ) , 1 none are cross - fertilised by insects . " " Yet , at the same time , in the Bennettitales are ...
... organisation ; for of all the gymnosperms now living , with the exception of Welwitschia ( and of some other Gnetales and some cycads ) , 1 none are cross - fertilised by insects . " " Yet , at the same time , in the Bennettitales are ...
Стр. 94
... organised group . Velenovsky ( 1905 , p . 84 ) draws attention to the following characters denoting their high organisation : the thallus is differentiated into a central axis with indefinite , and leaves with definite , growth ; the ...
... organised group . Velenovsky ( 1905 , p . 84 ) draws attention to the following characters denoting their high organisation : the thallus is differentiated into a central axis with indefinite , and leaves with definite , growth ; the ...
Стр. 117
... organisation or constitution of the being which is acted on , is generally a much more important element than the nature of the changed conditions , in determining the nature of varia- tion ( ibid . ) . " Each trifling variation is ...
... organisation or constitution of the being which is acted on , is generally a much more important element than the nature of the changed conditions , in determining the nature of varia- tion ( ibid . ) . " Each trifling variation is ...
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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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