Women might be able to create sperm and lesbians may soon produce their own biological daughters. Scientists in the U.K. are seeking ethical permission to produce synthetic sperm cells from a woman’s bone marrow tissue. Researchers have shown that it’s possible to produce rudimentary sperm cells from male bone-marrow tissue.
Creating sperm from women would mean they would only be able to produce daughters because the Y chromosome of male sperm would still be needed to produce sons. The latest research brings the prospect of female-only conception a step closer.