<< My point really isn't about the doubling of the genetic
information but the difficulty in pulling off this feat. I suspect that
before any cases of polyploidy in mammals had been found some could have
suggested in was impossible but despite the extremely remote chance of it
occurring it apparently has (unless these are a separate rat kind of some
sort that just happens to look like other rats). It just shows that
things that seem extremely unlikely still do occur and we shouldn't be too
quick to make bold statements that this or that couldn't have occurred.>>
Good point. But what would really have been impressive is if these
rats were triploids.
Mike