Tongues, curling into a tube, or not

From: Brett Aubrey (brett.aubrey_at_shaw.ca)
Date: 11/06/04 

Date: Sat, 6 Nov 2004 03:31:10 +0000 (UTC)

In Richard Dawkin's The Ancestor's Tale, he mentions the 50/50 split on
Humanity's ability to curl our tongue into a tube. Might there have been a
reason for this trait, or its' absense? Or is this just likely an example
of a minor mutation that is advantageously neutral? Or something else? TIA
Regards, Brett Aubrey.

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