The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for LifeWerner Company, Book Manufacturers, 1900 - 538ÆäÀÌÁö |
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... kind in the country . But , for our purpose , a form of Selection , which may be called Unconscious , and which results from every one trying to possess and breed from the best individual animals , is more important . Thus , a man who ...
... kind in the country . But , for our purpose , a form of Selection , which may be called Unconscious , and which results from every one trying to possess and breed from the best individual animals , is more important . Thus , a man who ...
112 ÆäÀÌÁö
... kind . This is rather an ex- treme estimate for most of the higher animals , but by no means so for many of the lower organisms . He then shows that if a single individual were born , which varied in some manner , giving it twice as ...
... kind . This is rather an ex- treme estimate for most of the higher animals , but by no means so for many of the lower organisms . He then shows that if a single individual were born , which varied in some manner , giving it twice as ...
326 ÆäÀÌÁö
... kind of wolf , when young and without any training , as soon as it scented its . prey , stand motionless like a statue , and then slowly crawl forward with a peculiar gait ; and another kind of wolf rushing round , instead of at , a ...
... kind of wolf , when young and without any training , as soon as it scented its . prey , stand motionless like a statue , and then slowly crawl forward with a peculiar gait ; and another kind of wolf rushing round , instead of at , a ...
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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 lamell©¡ large number larger genera larv©¡ 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