FWIW I think "bringing back" any species of any sexually reproducing animal is not technically possible if we don't have an ovum. The ovum itself contains a great deal of information, in the form of localized proteins, organelles etc, that would be necessary for the clone to develop as a Neanderthal originally did, and a human or ape ovum might not be able to develop into a viable fetus even of a Frankenstein type species, even if you stuck a perfectly prepared Neanderthal genome into it and got lucky with it being immunologically similar enough to the surrogate to survive. And you likely couldn't perfectly prepare the genome. You'd have lost a lot of information just in trying to get the chromosomes ready ... cloning is done by transplanting a nucleus that already has chromosomes from and undifferentiated cell in it, not by sticking DNA into a cell. the development of an organism is far more complex and subtle than sci-fi would like to make it out to be. It's not just a matter of having a gene sequence.
Someone correct me if I'm wrong about cloning and they're doing something new now. Or does there exist a permanently deepfrozen Neanderthal ovary somewhere?
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