The ability to roll your tongue is inherited genetically.

The ability to roll your tongue is inherited genetically.

The percentage of the human population that has this skill ranges from 65 to 81 percent. A slightly higher percentage of females can do this than males.

The ability to roll one's tongue is a genetic trait that historically has been used to demonstrate the concepts of dominant and recessive traits in classrooms. However, the dominant nature of the "tongue-rolling gene" has been disproved, and is no longer an acceptable example to teach genetics in the classroom.