The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for LifeD. Appleton, 1904 - 435페이지 |
도서 본문에서
100개의 결과 중 1 - 5개
v 페이지
... common species , vary most - Species of the larger genera in each country vary more frequently than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally ...
... common species , vary most - Species of the larger genera in each country vary more frequently than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally ...
vi 페이지
... common parent - Ex- plains the grouping of all organic beings - Advance in organ- isation - Low forms preserved - Convergence of Character- Indefinite multiplication of species - Summary • . 97 CHAPTER V. LAWS OF VARIATION . Effects of ...
... common parent - Ex- plains the grouping of all organic beings - Advance in organ- isation - Low forms preserved - Convergence of Character- Indefinite multiplication of species - Summary • . 97 CHAPTER V. LAWS OF VARIATION . Effects of ...
9 페이지
... common result of changed conditions than definite variability , and has probably played a more important part in the forma- tion of our domestic races . We see indefinite vari- ability in the endless slight peculiarities which ...
... common result of changed conditions than definite variability , and has probably played a more important part in the forma- tion of our domestic races . We see indefinite vari- ability in the endless slight peculiarities which ...
22 페이지
... common wild duck and rabbit . The doctrine of the origin of our several domestic races from several aboriginal stocks , has been carried to an absurd extreme by some authors . They believe that every race which breeds true , let the ...
... common wild duck and rabbit . The doctrine of the origin of our several domestic races from several aboriginal stocks , has been carried to an absurd extreme by some authors . They believe that every race which breeds true , let the ...
24 페이지
... common tumbler has the singular inherited habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long massive beak and large feet ; some of the sub ...
... common tumbler has the singular inherited habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long massive beak and large feet ; some of the sub ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period 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 males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young