A(n) _______________ allele is ignored when it is combined with a dominant allele

Which part of the brain has been found to be activated when we are learning to be afraid of a particular stimulus?

a. The amygdala b. The hippocampus c. The striate nucleus d. The hypothalamus

From an early age, Justin tended to be a very moody child, who reacted intensely,

often angrily, to most situations. Thomas and Chess would describe Justin as a(n) child. a. easy b. slow-to-warm-up c. spoiled d. difficult