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도서 Just as man can improve the breed of his gamecocks by the selection of those birds...에 대해 검색한 12개 도서 중 1 - 10
" Just as man can improve the breed of his gamecocks by the selection of those birds which are victorious in the cockpit, so it appears that the strongest and most vigorous males, or those provided with the best weapons, have prevailed under nature, and... "
The Law of Heredity: A Study of the Cause of Variation, and the Origin of ... - 215 페이지
저자: William Keith Brooks - 1883 - 336 페이지
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Darwinism and Design; Or, Creation by Evolution

George St. Clair - 1873 - 259 페이지
...nature female birds, by having long selected the more attractive males, have added to their beauty. In the same manner as man can improve the breed of...secondary sexual characters are eminently variable. The Accumulation of Variations by Natural Selection (or the Struggle for Existence}. — The cases...
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The Descent of Man and Selection in Relation to Sex

Charles Darwin - 1874 - 688 페이지
...instinct, they know what they are about, and consciously exert their mental and bodily powers. Just as man can improve the breed of his game-cocks by...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in reiterated deadly contests...
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Charles Darwin

Grant Allen - 1885 - 206 페이지
...the breed of his gamecocks by the selection of those birds which are victorious in the cockpit, so the strongest and most vigorous males, or those provided with the best weapons, have prevailed in the state of nature over their feebler and more cowardly competitors. Just as man can give beauty,...
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The Descent of Man and Selection in Relation to Sex

Charles Darwin - 1888 - 688 페이지
...the breed of his game-cocks by the selection of those birds wliich are victorious in the cockpit, BO it appears that the strongest and most vigorous males,...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in riiterated deadly contests...
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Charles Darwin's Works: The descent of man and seletion in relation to sex

Charles Darwin - 1896
...his game-cocks by the selection of those birds which are victorious in the cockpit, so it apj>ears that the strongest and most vigorous males, or those...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in reiterated deadly contests...
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Selections from "The Origin of Species", "The Descent of Man", "The ...

Charles Darwin - 1902 - 213 페이지
...those birds which are victorious in the cockpit, so it appears that the strongest and most vigorous 100 males, or those provided with the best weapons, have...and have led to the improvement of the natural breed of species. A slight degree of variability leading to some advantage, however slight, in reiterated...
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Evolution and adaptation

Thomas Hunt Morgan - 1903 - 470 페이지
...this process and that of artificial selection may be gathered from the following statement : — "Just as man can improve the breed of his game-cocks by...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in reiterated deadly contests...
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Library of universal knowledge, science, 2권

1905
...inatinct, they know what they are about, and consciously exert their mental and bodily powers. Just as man can improve the breed of his game-cocks by...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in reiterated deadly contests...
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Sociology and Social Progress

Thomas Nixon Carver - 1905 - 810 페이지
...instinct, they know what they are about, and consciously exert their mental and bodily powers. Just as man can improve the breed of his gamecocks by the...to the improvement of the natural breed or species. A slight degree of variability leading to some advantage, however slight, in reiterated deadly contests...
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Red Deer: Behavior and Ecology of Two Sexes

T. H. Clutton-Brock, F. E. Guinness, S. D. Albon - 1982 - 378 페이지
...indecisive fights. Mann- Whitney U test: U = 8,nt = \7,n2 = 4,p < .02. 7 Reproductive Success in Stags Just as man can improve the breed of his game-cocks by...with the best weapons, have prevailed under nature. 7.1 INTRODUCTION As we described in the previous chapter, stags can monopolize breeding access to considerable...
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