At least 49 genes contribute to whether one’s earlobes are attached or detached.
That's what researchers at the University of Pittsburgh found in a new study. Lead author John R. Shaffer says this work could help shed light on serious genetic syndromes.
"Some of these conditions, like an example is Mowat-Wilson syndrome, the ear involves earlobe malformations," said Shaffer. "In the same genes that affect normal variation in the morphology, when they're disrupted, they lead to genetic syndromes."