MadSci Network: Genetics |
It is not clear whether Dolly is older than her birthdate - it is difficult to interpret these data and there is only information on one such clone (Dolly) so far. But if it is true - that Dolly is as biologically old as the sheep from which she was cloned - then your suggestion of cloning from a fetus would work. In fact, it is done regularly in animal breeding - not in the way Dolly was cloned but by taking a young embryo with only a few cells and "splitting" it. This, of course, is how identical twins arise and is much easier than Dolly-style cloning.
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