In a message dated 11/20/99 3:55:57 PM Pacific Standard Time, jr@shasta.com writes:
> Now, if mice suddenly mutated (or got genetically engineered) so that they
could
> live 200 years and grow as big as elephants, should we expect them to do
so in
> large numbers, in the wild? Or would something in their natural environment
> interact with the Uber-Mice in such a way as to reduce rather than increase
> their numbers? --J. R.
Big size can be either good or bad, so it's hard to say in general. Big as an elephant would, I think, be very bad. Little mice are doing very well while the only land animal as big as an elephant (the elephant :-) will be extinct in the wild in a few decades if humans don't save the ranges.