Female sperm can be either 1) a sperm that contains an X chromosome, produced in the usual way by a male, referring to the fact that when such a sperm fertilizes an egg, a female child is born, or 2) sperm containing genetic material from a female. This article focuses on the second definition.
Since the late 1980s, scientists have explored how to produce sperm where all of the chromosomes come from a female donor. In the late 1990s, this concept became a partial reality when scientists in Japan developed chicken female sperm by injecting bone marrow stem cells from a female chicken into a rooster's testicles. This technique proved to fall below expectations, however, and has not yet been successfully adapted for use on humans.
Read more about Female Sperm: Female Sperm Production, Bone Marrow Stem Cell Conversion, Same-sex Marriage
Famous quotes containing the word female:
“I look on it as no trifling effort of female strength to withstand the artful and ardent solicitations of a man that is thoroughly master of our hearts. Should we in the conflict come off victorious, it hardly pays us for the pain we suffer from the experiment ... and I still persist in it that such a behaviour in any man I love would rob me of that most pleasing thought, namely, the obligation I have to him for not making such a trial.”
—Sarah Fielding (1710–1768)