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Members of Parliament in Britain have voted overwhelmingly in favor of controversial scientific technique that would allow the creation of babies using DNA from three people. If the measures were approved by the House of Lords, Britain would become the first country to legalize the procedure. Scientists say it could prevent children inheriting certain life threatening diseases. Here’s our health correspondent James Gallagher explains:
Doctors want to create babies from two women and one man in order to prevent deadly genetic diseases. The aim is to correct defects in a tiny shortage in the body that convert food to usable energy. These mitochondria are passed only from mother to child. The scientist's solution is to combine the parents’ DNA with healthy mitochondria from a donor woman. Evidence suggests the technique would be safe but nobody can be certain. It also raises ethical questions.
英国议员们以压倒性的投票结果支持了一项富有争议的科学技术，即允许使用三人的DNA来制造婴儿。如果上议院也批准通过，那么英国将成为首个将该程序合法化的国家。科学家称该技术能预防儿童遗传一些威胁生命的疾病，健康记者詹姆斯·加拉格尔报道。
医生们希望用两名妇女和一名男子来制造婴儿，希望能避免致命的遗传疾病。其目的是纠正身体内有缺陷线粒体，线粒体能将食物转化为可用能量。这些线粒体只能由母亲传给孩子，科学家的解决办法是将父母的DNA加入有健康线粒体的捐赠妇女的DNA。有证据表明这项技术安全，但没有人能确定，同时还引发了道德质疑。
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