Is tongue-rolling a genetic or learned trait?

Subject: Is tongue-rolling a genetic or learned trait?

Date: Sun Mar 29 06:07:21 1998
Posted by rich krieg
Grade level: 7-9
School: Washington Middle School
City: Green Bay State/Province: WI
Country: USA
Area of science: Genetics
ID: 891173241.Ge

Message:


I have two reliable sources that disagree on this topic.

Re: Is tongue-rolling a genetic or learned trait?

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