Another Student Proposes That Handedness Could Just as Easily Be

question 22

Multiple Choice

Another student proposes that handedness could just as easily be passed to children by how the parents carry the child and interact with it, a learning process that may perpetuate from the parents' handedness. Assuming all parents and children are expressing their "true handedness," the occurrence of which case below would cast the most serious doubt on a simple genetic basis for handedness, with left-handedness recessive?

• A) Two right-handed parents have a left-handed child.
• B) Two left-handed parents have a right-handed child.
• C) Left-handed parents only have left-handed children.
• D) Right-handed parents only have right-handed children.
• E) None of the choices are correct.

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