Molly, whose eyes are brown, inherited a gene for blue eyes from her mother and a gene for brown eyes from her father. Molly’s brown eyes are part of her ____

Marisa is at a point in her pregnancy when the blastocyst is moving down to her uterus, and the placenta begins to form. Which stage of prenatal development is Marisa currently experiencing?

A) fetal B) embryonic C) placental D) germinal

Drugs such as Xanax and Valium are classified as _____

a) narcotics. b) barbiturates. c) amphetamines. d) minor tranquilizers.