Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 84
... branches deriving their origin from seed - ferns through the hypo- thetical Proanthostrobilatae , while the Cycadales constitute a separate branch . Berry ( 1916 , p . 36 ) , the most recent of the authors who have written on the ...
... branches deriving their origin from seed - ferns through the hypo- thetical Proanthostrobilatae , while the Cycadales constitute a separate branch . Berry ( 1916 , p . 36 ) , the most recent of the authors who have written on the ...
Стр. 94
... branches grow from the axils of the leaves ; the reproductive organs are regularly disposed on the leaves ; there are true rhizoids ; the male and female sexual organs are complex and somewhat recall what we observe in mosses ; asexual ...
... branches grow from the axils of the leaves ; the reproductive organs are regularly disposed on the leaves ; there are true rhizoids ; the male and female sexual organs are complex and somewhat recall what we observe in mosses ; asexual ...
Стр. 348
... branches which evolve throughout longer or shorter series of geo- logical epochs , parallel to each other and nowhere uniting . Every one of these branches , with varying speed , reaches a condition when mutations on a large scale are ...
... branches which evolve throughout longer or shorter series of geo- logical epochs , parallel to each other and nowhere uniting . Every one of these branches , with varying speed , reaches a condition when mutations on a large scale are ...
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