The origin of species by means of natural selectionРипол Классик, 1929 - 454페이지 |
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9 페이지
... hand, we see domesticated animals and plants, though often weak and sickly, yet breeding quite freely under confinement ; and when, on the other hand, we see individuals, though taken youn from a state of nature, rfectly tamed, long ...
... hand, we see domesticated animals and plants, though often weak and sickly, yet breeding quite freely under confinement ; and when, on the other hand, we see individuals, though taken youn from a state of nature, rfectly tamed, long ...
38 페이지
... hand, nurserymen, from raismg large stocks of the same plants, are generally far more successful than amateurs m etting new and valuable varieties. The kee ing of a lgarge number of individuals of a species in any country requires that ...
... hand, nurserymen, from raismg large stocks of the same plants, are generally far more successful than amateurs m etting new and valuable varieties. The kee ing of a lgarge number of individuals of a species in any country requires that ...
39 페이지
... hand, cats, from their nocturnal rambling habits, cannot be matched, and, although so much valued by women and children, we hardly ever see a distinct breed kept up; such breeds as we do sometimes see are almost always imported from ...
... hand, cats, from their nocturnal rambling habits, cannot be matched, and, although so much valued by women and children, we hardly ever see a distinct breed kept up; such breeds as we do sometimes see are almost always imported from ...
46 페이지
... hand, they are united b man intermediate links, and it is very doubtfu whet er these links are hybrids; and there is, as it seems to me, an overwhelming amount of experimental evidence, showing that they descend from common parents, and ...
... hand, they are united b man intermediate links, and it is very doubtfu whet er these links are hybrids; and there is, as it seems to me, an overwhelming amount of experimental evidence, showing that they descend from common parents, and ...
51 페이지
... hand, if we look at each species as a special act of creation, there is no apparent reason why more varieties should occur in a group having many species, than in one having few. To test the truth of this anticipation I have arranged ...
... hand, if we look at each species as a special act of creation, there is no apparent reason why more varieties should occur in a group having many species, than in one having few. To test the truth of this anticipation I have arranged ...
목차
5 | |
ON was GEOLOGICAL SUCCESSION OF ORGANIC | 155 |
GEOGRAPHICAL DISTRIBUTION | 282 |
Gnoonnmcu DISTRIBUTION Continued | 302 |
RECAPITULATION AND CONCLUSION | 415 |
41 | 449 |
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자주 나오는 단어 및 구문
action adapted advantage allied America amount ancient animals appear become believe birds breeds cause characters climate closely common considered continuous crossed descendants difl'erent distinct domestic doubt evidence existing extinct extremely facts families favourable fertility find first flowers follow formations forms genera genus give given greater groups habits hand Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate islands kind known land laws less lines living look males manner means migration modification namely natural selection naturalists nearly never observed occur organic origin parent perfect period plants points present principle probably produced range ranked reason regions remains remarked resemble seeds seems seen separated shown single slight sometimes species sterility structure struggle successive suppose tend theory tion trees variability variations varieties vary whole widely