Can you roll your tongue? Turns out, that simple trait comes down to genetics. But genetics don’t only determine fun traits like this, they also play a major role in your health. Some traits - like tongue rolling - follow dominant and recessive inheritance. The same concept applies to various genetic conditions and diseases, which means if you and your partner carry the same recessive gene or carry the same disease, there is a chance your child could inherit it. That’s why genetic testing is so

Tongue-rolling: The myth. Some people can roll their tongue into a tube, and some people can’t. This is one of the most common traits that biology teachers use to demonstrate basic genetic principles. Alfred Sturtevant (one of the pioneers of Drosophila genetics (http://en.wikipedia.org/wiki/Alfred_Sturtevant)) described tongue rolling as a simple two-allele character, with the allele for rolling (usually given the symbol T or R) being dominant over the allele for non-rolling (t or r) (Sturtevan