Rachel has found that when she opens the cupboard door to get the cat food, the cats come running to the kitchen. Rachel knows that this is classical conditioning and that the unconditioned stimulus is the ______

A similarity among children with separation anxiety and those with school refusal is that they both fear going to school and often stay home. The difference in the symptoms of these diagnoses is that:

A) if allowed to stay home, children with school refusal generally recover. B) separation anxiety usually lasts into adulthood, while school refusal does not. C) in separation anxiety, the fear is limited to school. D) school refusal often involves fear of others at school, academic fear, and separation anxiety.

Hannah and Franz both have blond hair and blue eyes. Their daughter, Elsa, has blond hair and blue eyes. Elsa has therefore received similar genes from her parents. She is said to be ___________ for these traits

a. homozygous c. genus b. heterozygous d. phyla