Can You 'Roll' Your Tounge?

[-Soph-]

Yeah I can

[beer]

oh i can also waggle my ears

[Wayne]

Nah, I can't roll my tongue.

The act of tongue rolling describes one's ability to roll the tongue into a "hollow tube". The ability to roll the tongue has been generally believed to depend on genetic inheritance. Tongue rolling was believed to be a dominant trait with simple Mendelian inheritance, and is still commonly taught in high school and introductory biology courses. It provided a simple experiment to demonstrate inheritance.

There is little laboratory evidence, though, for the common belief that tongue rolling is heritable and dominant. A 1975 twin study found that identical twins (who share all of their genes) were no more likely than fraternal twins (who share an average of half) to both have the same phenotype for tongue rolling.

[Jesus-Egg]

Yes, I can.

[benjamin]

no, i can't.

[-Soph-]

no, i can't.

Aww, poor ben! -pets-

[kolopo]

yeaah i can

[N!ck]

Yep, I can

[clarissa !!]

yeah .

[benjamin]

is the gene and dominant one or a reccessive one? it seems more people can than can't.