Lam, how do we know the tetraploidy rat (Tympanoctomys barrerae) recently arose, as claimed:
quote:
Some believe that the rat came about because of an error in meiosis during reproduction of a normal rat probably 2 decades ago or so.
One of your other references concerning the Tympanoctomys barrerae:
quote:
And finally, I have pointed out that studies have been done on the tetraploidy rat and they've shown that the species only came about the last few decades or so
Niet gevonden - Not found
"It is notable that, based respectively on the slower or faster rates, the tetraploid Tympanoctomys barrerae must have diverged from its sister-taxon Octomys mimax [sim]10 or 6.5 myr ago."
Yes, we recently found a tetraploid mammal, but that dosen't mean it "recently" arose.
This message has been edited by mitigo, 12-19-2004 03:52 AM
This message has been edited by mitigo, 12-19-2004 04:00 AM
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