Since January, a new California law allows for a child to have more than two legal parents. But children are still limited to two genetic parents. That could change soon, if the Food and Drug Administration approves human clinical trials for a technique known as mitochondrial replacement, which would enable a child to inherit DNA from three parents.
News of the pending application has caused a kind of panic not seen since Dolly the sheep was cloned, raising the possibility of a single genetic parent. But far from being the end of the human race as we know it, the technique might be a way to prevent hundreds of mitochondrial-linked diseases, which affect about one in 5,000 people.
Read the full, original story: Three genetic parents — for one healthy baby