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Combining The DNA Of Three People Raises Ethical Questions
“It’s like microsurgery,” says Laura Irving of Newcastle University.
Irving is part of a team of scientists trying to replace defective DNA with healthy DNA. They hope this procedure could one day help women who are carrying genetic disorders have healthy children.
“We are talking about conditions for which there is currently no cure,” says Dr. Doug Turnbull, a professor of neurology at Newcastle University who is leading the research. These mitochondrial diseases are caused by hereditary defects in human cells.
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But the idea of scientists manipulating a human being’s DNA in this way is very controversial. It would be the first time genetic changes have been made in human DNA that would be passed on, down the generations, through the germline. Any baby born this way would have genes from three different people.
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