I've noticed that me, my maternal uncle, and several of my male cousins have the exact same deep, booming voice. My mother and several female relatives also have deep voices, while my father and sister have average-toned, raspy voices. I've always thought the sound of one's voice was a completely unique attribute, and I haven't seen this kind of pattern in any other family. Could it be the environment or diet, or is there something more innate. I realize the sound of one's voice is fully realized at puberty, but is there something that predisposes one to have a deep voice or a high voice or a nasally voice?
Re: Is there a genetic element that determines the sounds of our voices?
Try the links in the MadSci Library for more information on Genetics.