answer:That’s the million dollar question. As far as we’ve seen, Cylon’s CANNOT grow age-wise. They can, however, be implanted with false memories – as in the case of Boomer (or was it Sharon? Whatever, you know the model I mean), who believed she was human. BUT – Boomer’s “human” backstory was never provable, as is the case of these final cylon’s. Her family was all dead and her friends hadn;t known her for a very long time. Sorry I don’t have a better answer – hopefully we’ll find out this season (we’d better)!