The origin of species by means of natural selectionРипол Классик, 1929 - 454페이지 |
도서 본문에서
68개의 결과 중 1 - 5개
8 페이지
... breed freely under confinement, even in the man cases when the male and female unite. How man animals there are which will not breed, though living ong under not very close confinement in their native country! This is generally ...
... breed freely under confinement, even in the man cases when the male and female unite. How man animals there are which will not breed, though living ong under not very close confinement in their native country! This is generally ...
9 페이지
... breed freely under the most unnatural conditions (for instance, the rabbit and ferret kept in hutches), showing that their reproductive system has not been thus affected; so will some animals and plants withstand domestication or ...
... breed freely under the most unnatural conditions (for instance, the rabbit and ferret kept in hutches), showing that their reproductive system has not been thus affected; so will some animals and plants withstand domestication or ...
11 페이지
... Breeders believe that long imbs are almost always accompanied by an elongated head. Some instances of correlation are quite whimsical : thus cats with blue eyes are invariably deaf; colour and constitutional peculiarities go together ...
... Breeders believe that long imbs are almost always accompanied by an elongated head. Some instances of correlation are quite whimsical : thus cats with blue eyes are invariably deaf; colour and constitutional peculiarities go together ...
13 페이지
... breeds are often transmitted either exclusively, or in a much greater degree, to males alone. A much more important rule, which 1 think may be trusted, is that, at whatever period of life a peculiarity a pears, it tends to appear in the ...
... breeds are often transmitted either exclusively, or in a much greater degree, to males alone. A much more important rule, which 1 think may be trusted, is that, at whatever period of life a peculiarity a pears, it tends to appear in the ...
14 페이지
... breed our cart and race horses, long and short horned cattle, and poultry of various breeds, and esculent vegetables, for an almost infinite number of generations, would be opposed to all experience. I may add, that when under nature ...
... breed our cart and race horses, long and short horned cattle, and poultry of various breeds, and esculent vegetables, for an almost infinite number of generations, would be opposed to all experience. I may add, that when under nature ...
목차
5 | |
ON was GEOLOGICAL SUCCESSION OF ORGANIC | 155 |
GEOGRAPHICAL DISTRIBUTION | 282 |
Gnoonnmcu DISTRIBUTION Continued | 302 |
RECAPITULATION AND CONCLUSION | 415 |
41 | 449 |
기타 출판본 - 모두 보기
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