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Could same-sex couples soon conceive a child with both their DNA?
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Could same-sex couples soon conceive a child with both their DNA? Azim Surani , a prominent scientist at the University of Cambridge, said he and his colleagues made a major discovery in mimicking the way the body creates sperm from stem cells. During a conference in London last month, he discussed the results of his not-yet-published study. The process is necessary to prevent DNA mutations from being passed to offspring. Albertini noted scientists in China and Japan created artificial sperm and eggs from stem and skin cells that produced healthy mice pups.
This article has been cited by other articles in PMC. Editor—The widely held idea that spermatozoa bearing the Y chromosome Y sperm swim faster than those bearing the X chromosome X sperm seems to have originated from Shettles's work in , using phase-contrast microscopy. There were no intermediate types. The finding particularly influenced research on sperm separation. Although several attempts have been made to correct this impression, it was not until the development of computer assisted sperm analysis CASA 3 that reliable observations could be made.
For illustration purposes only. Mammals, of course, have always reproduced via the sperm of one animal combining with the egg cell of another. Although only 1 percent of the cells led to live births, the animals that were born alive were healthy, fertile, and lived a normal lifespan, says Katsuhiko Hayashi, a stem cell biologist at Kyushu University in Fukuoka, Japan, and the senior author of a paper on the research, published Monday in Nature. Although this process likely remains decades away from a stage at which it could work in people, the research suggests it may someday be possible for women who lack eggs, or for men without sperm, to get replacement cells made from their own skin. If that becomes possible it could extend the age of human fertility by decades, help preserve endangered animal species and someday perhaps allow same-sex couples to have their own genetic children.