More broadly, our results show that precopulatory sexual selection can play a role in the evolution of genital traits. Our results support the hypothesis that female mate choice could have driven the evolution of larger penises in humans. Surprisingly, larger penis size and greater height had almost equivalent positive effects on male attractiveness. There was a similar increase in the positive effect of penis size on attractiveness with a more masculine body shape (i.e., greater shoulder-to-hip ratio). Penis size had a stronger effect on attractiveness in taller men than in shorter men. Positive linear selection was detected for penis size, but the marginal increase in attractiveness eventually declined with greater penis size (i.e., quadratic selection). Some men may have a larger penis when it’s flaccid, but it doesn’t increase much in size with an erection. Here we show, based upon female assessment of digitally projected life-size, computer-generated images, that penis size interacts with body shape and height to determine male sexual attractiveness. This observation has generated suggestions that human penis size partly evolved because of female choice. Before clothing, the nonretractable human penis would have been conspicuous to potential mates. There could, however, also be direct precopulatory female mate choice based on male genital traits. As she spoke, the stars that were moving rapidly just now slowed down at this moment, and every star in the sky and under the sky could be clearly seen. Compelling evidence from many animal taxa indicates that male genitalia are often under postcopulatory sexual selection for characteristics that increase a male's relative fertilization success. Foods Good For Penis Growth Penis Growth Powder or human penis shapes and sizes, Penis Growth Age. Normal Penis Variants (coming soon) The SillyWilly Gallery Botched Penis Circumcision Scar STIs & Genital Conditions Menu Toggle.
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