New Delhi: In a path-breaking experiment, scientists have created embryos with genes taken from three persons, two women and one man. The researchers at Oregon Health & Sciences University said they are not using the embryos to produce children, and it is not clear when or even if the technique will be put to use.But it has already stirred a debate over its risks and ethics in Britain, where scientists did similar work a few years ago. The British experiments, reported in 2008, led to headlines about the possibility someday of babies with three parents. But that`s an overstatement. The DNA from the second woman amounts to less than 1 percent of the embryo`s genes, and it isn`t the sort that makes a child look like Mom or Dad. The procedure is simply a way of replacing some defective genes that sabotage the normal workings of cells. The British government is asking for public comment on the technology before it decides whether to allow its use. One concern it cites is whether such DNA alteration could be an early step down a slippery slope toward "designer babies" ordering, say, a petite, blue-eyed girl or tall, dark-haired boy.
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