(June 21, 2017 at 11:11 pm)snowtracks Wrote: The parent cell dies out after replication. The new divided cell has been changed but unproven to replicate successfully. To have replication capabilities, complex systems need to be operational with DNA coding completely functional.
Well, many cell lines have died out, and only the ones that can continue to replicate have made it through to the present day. DNA doesn't have to be completely functional in the early stages; it's just nucleotide soup until a winning combination shows up, but once there is a pool of stable DNA sequences and successful organisms there's something to build on.