Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 18
... struggle for existence . These principles are accepted as given , as something obvious and self - evident . At the same time they are all purposive : if there were no variation , no organism could adapt itself to varying external ...
... struggle for existence . These principles are accepted as given , as something obvious and self - evident . At the same time they are all purposive : if there were no variation , no organism could adapt itself to varying external ...
Стр. 45
... STRUGGLE FOR EXISTENCE Together with Plate ( Op . cit . 1913 , p . 223 ) we may dis- tinguish the following types of the struggle for existence , or , in his words , of " natural elimination . " 1. Catastrophic extermination in the mass ...
... STRUGGLE FOR EXISTENCE Together with Plate ( Op . cit . 1913 , p . 223 ) we may dis- tinguish the following types of the struggle for existence , or , in his words , of " natural elimination . " 1. Catastrophic extermination in the mass ...
Стр. 46
... struggle for existence , as a fact , cannot be denied . It must not , however , be forgotten , that in the organic world , besides the struggle for life , an important place should be reserved for a principle of opposite tendencies ...
... struggle for existence , as a fact , cannot be denied . It must not , however , be forgotten , that in the organic world , besides the struggle for life , an important place should be reserved for a principle of opposite tendencies ...
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