 This leads me to say a few words on what I have called Sexual Selection. This form ot selection depends, not on a struggle for existence in relation to other organic beings or to external conditions, but on a struggle between the individuals of one sex,...  A Textbook in General Zoology - Էջ 106Henry Richardson Linville, Henry Augustus Kelly - 1906 - 462 էջԱմբողջությամբ դիտվող - Այս գրքի մասին
 | Charles Darwin - 1875 - 504 էջ
...occurs. This leads me to say a few words on what I have called Sexual Selection. This form ot selection depends, not on a struggle for existence in relation...result is not death to the unsuccessful competitor, bnt few or no offspring. Sexual selection is, therefore, less rigorous than natural selection. Generally,... | |
 | George Ticknor Curtis - 1887 - 606 էջ
...existence in relation to other organic beings or to external conditions, but on a struggle between individuals of one sex, generally the males, for the possession of the other sex."* "The result," continues Mr. Darwin, " is not death to the unsuccessful competitor, * "Origin of Species," p. 69.... | |
 | Bering Sea Tribunal of Arbitration - 1895 - 340 էջ
...I have called "Sexual Selection". This form of selection depends not on a struggle for existence hi relation to other organic beings, or to external conditions,...possession of the other sex. The result is not death. I pause to note, in that very interesting passage, — a very graphic passage from the affidavit of... | |
 | 1921 - 608 էջ
...to say a few words on what I have called sexual selection. This form of selection depends not on the struggle for existence in relation to other organic beings, or to external conditions but to the struggle between the individuals of one sex, generally the males, for the possession of the... | |
 | Michael J. Ryan - 1985 - 246 էջ
...theory of sexual selection, a concept he introduced in the Origin of Species: "This form of selection depends not on a struggle for existence in relation to other organic beings or the external conditions, but on the struggle between individuals of one sex, generally the males, for... | |
 | Ruth Hubbard - 1990 - 248 էջ
...evolution operates. The Victorian and androcentric biases are obvious (p. 69): This form of selection depends, not on a struggle for existence in relation...beings or to external conditions, but on a struggle of individuals of one sex, generally males, for the possession of the other sex. . . . Generally, the... | |
 | Helena Cronin - 1991 - 510 էջ
...competition within one sex. Here is how Darwin contrasted it with natural selection: 'This form of selection depends, not on a struggle for existence in relation...generally the males, for the possession of the other sex' (Peckham 1959, pp. \13-4). What is more, sexual selection involves what was taken to be an unusual... | |
 | Daniel R. Brooks, Deborah A. McLennan - 1991 - 456 էջ
...— and proposed from this his theory of sexual selection (Darwin 1872:64). This form of selection depends, not on a struggle for existence in relation...generally the males, for the possession of the other sex. Fisher (1930, 1958) examined sexual selection in genetic terms and formulated the implications of this... | |
 | Cynthia Russett - 1991 - 260 էջ
...therefore introduced into the Origin a supplemental principle he called sexual selection, which depended "not on a struggle for existence in relation to other...generally the males, for the possession of the other sex." So intriguing did Darwin find this concept that when twelve years later he published his reflections... | |
 | Christopher Lane - 1998 - 464 էջ
...two: "This leads me to say a few words on what I have called Sexual Selection. This form of selection depends, not on a struggle for existence in relation...generally the males, for the possession of the other sex" {Origin 97—98). In Darwin's view, moreover, the principle of sexual selection is "less rigorous than... | |
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