I have a question (actually 2) that is probably so elementary it might make
some of you laugh, but working the premise that there are no stupid
questions.......
here goes.
Assuming that cells are "programmed" to undergo a certain number of divisions
and then they die, how is it that we have a continuous amount of cells to
replace the dead ones, such as with skin cells? Where do these "fresh" cells
come from?
If you start with a single cell that undergoes mitosis and you now have 2
cells, each with its own genome, did the repicated chromatids assort in such a
manner that some of the original strands and some of the replicated strands
end up in both cells?
Does a renewable source of young cells arise from some type of stem cell?
These are a couple of those questions that I have consistently tucked away to
be contemplated at a later date.
Thanks,
L.J. Smith
