The optic nerves from the inside half of each eye cross over at the ____________________ and then project to the opposite hemisphere of the brain

The continuum of the Big Five personality theory that deals with tendency to be spontaneous or self-disciplined is __________

a. extraversion/introversion b. neuroticism c. openness to experience d. conscientiousness

Down syndrome is most commonly caused by

A) advanced maternal or paternal age. B) an error that occurs in the early stages of mitosis, called mosaic pattern. C) mutation of the genetic material on the twenty-third chromosome pair. D) failure of the twenty-first pair of chromosomes to separate during meiosis.