[tzumby]

I agree that someone might have tried that, but the real question is, was the clone viable? From what I remember from my human genetics class in uni, cloning is not just about the genes but also about Methylation sites that are carried by complex machinery in the womb (a subject of Epigenetics).

[copperx]

Are there reasons to believe that human clones are different in this regard from animal clones? Animal clones are viable and live as long as its parent.

[sjburt]

Animal clones can live as long as the parent, but there are many issues with birth defects and elevated mortality. The early clones were the results of many hundreds of attempts, and for completely unknown reasons, primates have proven much more difficult than sheep and cows.

Even ignoring the ethical concern around cloning itself, putting a potential mother through this and producing a child at high risk of serious developmental problems seems extremely problematic ethically.

[tzumby]

There are, the machinery I mentioned is a lot more complex in humans. The expression of genes is heavily influenced by how the DNA folds (and this is affected by complexes of proteins that Methylate at different locations in the DNA)