Competition copulation human infidelity masturbation sperm

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Baker and bellis may not be always right, but it is a hell of a good story. - heredity human sperm competition copulation, masturbation and infidelity. Opens up a previously unexplored area of research in human sexuality. The result is something remarkable - a genuinely new book about sex. So too does the womans retention of sperm as determined by her orgasm pattern. Direct evidence is presented that men with larger testes and more symmetrical men are more likely to become involved in sperm competition. Both also inseminate women with more sperm during copulation and shed more sperm during masturbation. Human sperm competition copulation, masturbation, and infidelity r. In the first half of the book the authors explore the role of sperm competition in the evolution of human sexual characteristics, considering for example the architecture of the female reproductive tract, the reasons for male and female infidelity and the possible biological reasons for homosexuality, masturbation and orgasm. This book discusses these implications for human sexual behaviour and human infertility problems. Throughout the book, reference is made to work on the sexual b behavioural ecologists and evolutionary biologists have for a number of years been interested in the biological implications of sperm from different males competing for fertilization of. Human sperm competition copulation, masturbation and infidelity by robin baker quantity add to cart category self - help tags copulation , course available , human sperm competition , masturbation and infidelity , robin baker. Read human sperm competition copulation, masturbation and infidelity, by robin baker online on bookmate since the 1970s, behavioural ecologists and. Human sperm competition copulation, masturbation and infidelity amazon. Baker and bellis may not be always right, but it is a hell of a good story. - heredity human sperm competition copulation, masturbation and infidelity. Opens up a previously unexplored area of research in human sexuality. The result is something remarkable - a genuinely new book about sex.

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