Genetically,
A) handedness seems to run in families to some degree.
B) handedness is entirely environmentally determined.
C) 100% of people are born to be right-handed.
D) 50% of people are born to become right- or left-handed.

Question

Quizplus · Accepted Answer

Handedness has a genetic component, as it tends to run in families, indicating that genes influence whether a person is left- or right-handed. However, it is not solely determined by genetics, and the statements that handedness is entirely environmentally determined or that 100% or 50% of people are born to be right- or left-handed are incorrect.