Fascinating story on NPR this morning about a technique that allows the DNA of three parents to be combined to allow for a healthy child. This technique is used when there are hereditary defects in mitochondrial DNA. Essentially the fertilized DNA is stripped out of an embryo and inserted into a donor embryo with healthy mitochondrial DNA. The hope is that this technique both can lead to a healthy child, and one which, in turn, does not pass on the mitochondrial DNA defects along their own genetic chain.
Image: Daniel Horowitz for NPR
This procedure is not currently legal in the US. However, the British Parliament is currently considering changing legislation to allow this procedure.
Have a look at the amazing video of the transfer in process!!