The Origin of Species, Том 2Books, Incorporated, 1900 - Всего страниц: 365 |
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Стр. 265
... parent form ; but this , if it be true , is certainly only a difference in degree . Moreover , Gärtner expressly states that the hybrids from long cultivated plants are more subject to re- version than hybrids from species in their ...
... parent form ; but this , if it be true , is certainly only a difference in degree . Moreover , Gärtner expressly states that the hybrids from long cultivated plants are more subject to re- version than hybrids from species in their ...
Стр. 400
... parents . I have stated in the first chapter , that at whatever age a varia- tion first appears in the parent , it tends to reappear at a corre- sponding age in the offspring . Certain variations can only appear at corresponding ages ...
... parents . I have stated in the first chapter , that at whatever age a varia- tion first appears in the parent , it tends to reappear at a corre- sponding age in the offspring . Certain variations can only appear at corresponding ages ...
Стр. 402
... parent - form , as we have seen with the short - faced tumbler . And this is the rule of development in certain ... parent - form , and consequently to be constructed on a slightly different plan , or if it profited a larva already ...
... parent - form , as we have seen with the short - faced tumbler . And this is the rule of development in certain ... parent - form , and consequently to be constructed on a slightly different plan , or if it profited a larva already ...
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Часто встречающиеся слова и выражения
adapted admit affinity ancient animals appear Archipelago areas become believe belonging birds Cambrian characters classification climate closely allied species common continent creation crustaceans degree deposits descent with modification developed difficulty distant distinct species domestic doubt embryo Europe existing extinct facts faunas fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important INDIANENSIS individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammæ mammals manner marine Marsupials MDCCCXX migration modified descendants mongrels mountains natural selection naturalists nearly oceanic islands offspring parent peculiar perfect pistil plants pollen present probably produced progenitor quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds SIGILLUM Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory of natural tion variations varieties VERITAS whole widely different