Is being ambidextrous genetic?
Handedness is strongly correlated with which side of the brain controls speech. Because speech requires very fine motor control of the muscles of the vocal cords, the side of the brain that controls these muscles are also used to control the fine movement of the hand. The left brain of most people controls speech. Since the left brain controls the right side of the body, most people are able to perform tasks that require a great deal of fine motor skill (such as writing) only with their right hands. Right-handers can all use their left hand for most tasks that do not require fine motor control, such as rowing, for example. People who are left handed or ambidextrous usually have speech and fine motor control by the right brain or both sides of the brain. There is no definitive explanation for the inheritance of handedness, but left-handed mothers are reportedly more likely to have left handed children than left-handed fathers.
