Marlene's son begs to go to a baseball game on a school night. After some consideration, Marlene says she will take him as long as he finishes his homework before the game and promises to go to bed as soon as they get home. Marlene is demonstrating what kind of parenting style?

__________ are at greater risk for X-linked recessive disorders because they have __________________

a. Males; only one X chromosome b. Females; only one X chromosome c. Females; 2 X chromosomes d. Males; 2 X chromosomes

A college student is having difficulty staying awake during the day and sleeping through the night. This difficulty is most likely due to problems in the ________

a. cerebellum b. basal ganglia c. pons d. substantia nigra