The Origin of Species by Means of Natural Selection Or, The Preservation of Favored Races in the Struggle for LifeD. Appleton and Company, 1882 - 458페이지 |
도서 본문에서
78개의 결과 중 1 - 5개
v 페이지
... individuals and varieties of the same species : often severe between species of the same genus — The relation of organism to organism the most important of all rela tions 48-61 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF.
... individuals and varieties of the same species : often severe between species of the same genus — The relation of organism to organism the most important of all rela tions 48-61 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF.
3 페이지
... importance to gain a clear insight into the means of modification and coadaptation . At the commence- ment of my ... important , we shall see how great is the power of man in accumulating by his Selection successive slight variations ...
... importance to gain a clear insight into the means of modification and coadaptation . At the commence- ment of my ... important , we shall see how great is the power of man in accumulating by his Selection successive slight variations ...
4 페이지
... importance , for they determine the present welfare , and , as I believe , the future success and modification of ... important , but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . - - Causes of ...
... importance , for they determine the present welfare , and , as I believe , the future success and modification of ... important , but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . - - Causes of ...
6 페이지
... important ; for nearly similar variations sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimila variations arise under conditions which appear to be nearly uniform . The effects on ...
... important ; for nearly similar variations sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimila variations arise under conditions which appear to be nearly uniform . The effects on ...
9 페이지
... Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the correlations between quite distinct parts are very curious ; and many instances are given in Isidore Geoffroy St ...
... Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the correlations between quite distinct parts are very curious ; and many instances are given in Isidore Geoffroy St ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formations formerly forms fossil Fritz Müller genera genus geological Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed theory tion variability variations varieties vary whilst whole wings young