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:
“What I expect from my male friends is that they are polite and clean. What I expect from my female friends is unconditional love, the ability to finish my sentences for me when I am sobbing, a complete and total willingness to pour their hearts out to me, and the ability to tell me why the meat thermometer isn’t supposed to touch the bone.”
—Anna Quindlen (20th century)