Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 240
... parallel variation and Cope on homologous groups or series . Both in the " Origin of Species and in " Variation of Animals and Plants " Darwin deals with what he calls " analogous or parallel variation . " " By this term , " says Darwin ...
... parallel variation and Cope on homologous groups or series . Both in the " Origin of Species and in " Variation of Animals and Plants " Darwin deals with what he calls " analogous or parallel variation . " " By this term , " says Darwin ...
Стр. 247
... parallel lines . 66 The species of bumble - bees ( Bombus ) vary exceedingly , and at the same time variation follows parallel lines in dif- ferent species nearly every species possesses light and dark varieties ; in many species with a ...
... parallel lines . 66 The species of bumble - bees ( Bombus ) vary exceedingly , and at the same time variation follows parallel lines in dif- ferent species nearly every species possesses light and dark varieties ; in many species with a ...
Стр. 339
... parallel independent phyla . We have no reason to believe that pteridosperms are descended from ferns , the fern - like features of their foliage being in most part due , according to Scott , to parallel development . If we now turn to ...
... parallel independent phyla . We have no reason to believe that pteridosperms are descended from ferns , the fern - like features of their foliage being in most part due , according to Scott , to parallel development . If we now turn to ...
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 |
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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