Bioethics News

Discovery of Sperm’s ‘Power Kick’ Could Lead to Unisex Contraceptives and Explain Cause of Male Infertility

March 18, 2016

(Medical Daily) – We’re familiar with the scientific “fairy tale ” of human fertilization — sperm meets egg and together they form a one-celled zygote that will eventually grow and develop into a baby. These steps are well known, but up until now scientists were still unsure of what  triggers the sperm to penetrate and fertilize a human egg.  Biologists at the University of California at Berkeley recently discovered receptors on the sperm tail that are activated once it nears the egg. The new findings uncover another possible source of male infertility, and could also lead to the development of a unisex contraceptive, that works in both men and women.

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