. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. 28G SEXUAL SELECTION : MAMMALS. [Part It the throat, the white marks on the fetlocks, and the round black spots on the ears, are all more distinct in the male of the Portax picta, than in the female—when we see that the colors are more vivid, that the narrow white lines on the flauk and the broad white bar on the shoulder are. Fio. 60.—Damalis pyi»ar£*a, male (from the Knowgley Mcnajrcric). more distinct in the male 0rea8 Dcrbyani
. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. 28G SEXUAL SELECTION : MAMMALS. [Part It the throat, the white marks on the fetlocks, and the round black spots on the ears, are all more distinct in the male of the Portax picta, than in the female—when we see that the colors are more vivid, that the narrow white lines on the flauk and the broad white bar on the shoulder are. Fio. 60.—Damalis pyi»ar£*a, male (from the Knowgley Mcnajrcric). more distinct in the male 0rea8 Dcrbyaniis than in the fe- male—when we see a similar difference between the s< \< s of the curiously ornamented Tragelaphus scriptus (Fig. 68)—we may conclude that these colors and various marks have been at least intensified through sexual selec- tion. It is inconceivable that such colors and marks*can be of any direct pr ordinary service to these animals; and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York: D. Appleton and Company
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Keywords: ., bookcentury1900, booksubjectevolutionbio, booksubjecthumanbeings
