User:TomHaffie/sandbox

Earlobes average about 2 cm long, and elongate slightly with age. Although the "free" vs. "attached" appearance of earlobes is often presented as an example of a simple Mendelian trait in humans, several studies suggest that the story is not that simple. A quick survey of your friends will reveal that earlobes do not all fall neatly into either the "free" or the "attached" categories; there is a continuous range from one extreme to the other, suggesting the influence of several genes.