The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for LifeD. Appleton, 1904 - 435페이지 |
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100개의 결과 중 1 - 5개
v 페이지
... domestic varieties from one or more species - Domestic Pigeons , their Differences and Origin- Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic ...
... domestic varieties from one or more species - Domestic Pigeons , their Differences and Origin- Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic ...
viii 페이지
... Domestic instincts , their origin - Natural instincts of the cuckoo , Molothrus , ostrich , and parasitic bees - Slave - making ants - Hive - bee , its cell - making instinct - Changes of instinct and structure not necessarily ...
... Domestic instincts , their origin - Natural instincts of the cuckoo , Molothrus , ostrich , and parasitic bees - Slave - making ants - Hive - bee , its cell - making instinct - Changes of instinct and structure not necessarily ...
xiv 페이지
... domestic produc- tions . With respect to the means of modification , he attributed something to the direct action of the physical conditions of life , something to the crossing of already existing forms , and much to use and disuse ...
... domestic produc- tions . With respect to the means of modification , he attributed something to the direct action of the physical conditions of life , something to the crossing of already existing forms , and much to use and disuse ...
7 페이지
... Domestic Varieties from one or more Species - Domestic Pigeons , their Differences and Origin- Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic ...
... Domestic Varieties from one or more Species - Domestic Pigeons , their Differences and Origin- Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic ...
9 페이지
... domestic races . We see indefinite vari- ability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for by inheritance from either parent or from some more remote ...
... domestic races . We see indefinite vari- ability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for by inheritance from either parent or from some more remote ...
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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