Comment Not yet. (Score 1) 132
Already possible? That's just two people. This is three, and would allow a lesbian couple to have a biological child with a Y chromosome lent by a third party, so they could have a son.
The technology to pick and choose single chromosomes out of one nucleus to replace a chromosome in another nucleus simply does not exist and may not for quite some time since DNA does not wrap itself up neatly into little X's until cellular division. No, the techniques involved are far cruder than that.
Similarly, the technology to combine two egg nuclei into a single, viable diploid cell also does not yet exist.