> > At one end of the spectrum (the 'micro' end) it can just mean a shift in
a
> > gene pool's proportions due to some genes favouring survival (ie natural
> > selection / survival of the fittest)
> > At the other end (the 'macro' end) it can mean the origin of all species
> > from primordial soup.
> >
> > Completely different things (although the latter relies on the mechanism
of
> > the former)
>
> What makes them differerent?
Timescale for one. The former might happen in 10 years, the latter in 1
billion years.
> I thought that speciation was made up of
> the gradual changes, and that there weren't always objective lines
> between species, anyway, just subjective ones.
Right, but just because there's a spectrum doesn't mean each end of the
spectrum isn't completely different.
James
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