Good news for lesbians who want to have biological children related to both parents: a new stem-cell technique could allow scientists to convert female cells into sperm. Use that sperm to fertilize an egg, and voila: children with two female biological parents.
In unpublished work reported by New Scientist and the Telegraph, British scientists at the University of Newcastle coaxed female embryonic stem cells to develop into primitive sperm cells. Next, the researchers, led by stem-cell biologist Karim Nayernia, plan to create sperm cells from female bone marrow, making the procedure more practical. They haven’t yet made the primitive sperm undergo the final cell division that generates the correct amount of genetic material for fertilization, a process known as meiosis.
Scientists have been skeptical that sperm can be produced from female cells, which lack a Y chromosome and thus whichever Y-linked genes are crucial to sperm production.
Don’t settle for half the story.
Get paywall-free access to technology news for the here and now.
