The connections between sensory organs and the cerebral cortex are said to be

Susie has blonde hair, even though her mother and father each have brown hair. What do we know of Susie's parents?

a. each of her parents must have one dominant gene for blond hair b. each of her parents must have one recessive gene for blond hair c. at least one of her parents have a recessive gene for blond hair d. neither of her parents have has a gene for blond hair

Which of the following combinations of neurotransmitters seem to be at play in those who suffer from attention-deficit/hyperactivity disorder (ADHD)?

A) Glutamate, epinephrine, and acetylcholine B) Serotonin, dopamine, and norepinephrine C) Gamma-aminobutyric acid (GABA), epinephrine, and dopamine D) Glutamate, GABA, and serotonin