Danny is excited about his new truck-driving position. He purchased a new cab and is looking forward to running his first cross-country route. He plans to drive through the night to try to make his delivery early. What illicit drug is likely to keep Danny the most alert and awake?

Keith is a little boy and is just becoming aware that he is male. What is the term for what he is experiencing?

a. gender role b. gender bias c. gender identity d. gender dysphoria

As dizygotic twins, Jewel and Bjork a. are genetically identical

b. must have come from the same fertilized egg. c. share all phenotypes. d. share about half of their genes.