The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for LifeWerner Company, Book Manufacturers, 1900 - 538페이지 |
도서 본문에서
72개의 결과 중 1 - 3개
9 페이지
... cause ; and if the same cause were to act uniformly during a long series of gen- erations on many individuals , all probably would be modified in the same manner . Such facts as the com- plex and extraordinary out - growths which ...
... cause ; and if the same cause were to act uniformly during a long series of gen- erations on many individuals , all probably would be modified in the same manner . Such facts as the com- plex and extraordinary out - growths which ...
192 페이지
... cause of the original variability of these characters is not manifest ; but we can see why they should not have been rendered as constant and uniform as others , for they are accumulated by sexual selection , which is less rigid in its ...
... cause of the original variability of these characters is not manifest ; but we can see why they should not have been rendered as constant and uniform as others , for they are accumulated by sexual selection , which is less rigid in its ...
267 페이지
... cause for each slight individual difference , as well as for more strongly marked variations which oc- casionally arise ; and if the unknown cause were to act persistently , it is almost certain that all the individuals . of the species ...
... cause for each slight individual difference , as well as for more strongly marked variations which oc- casionally arise ; and if the unknown cause were to act persistently , it is almost certain that all the individuals . of the species ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted advantage allied animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree descendants developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important improved increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young