Deep sleep, which is important for restoring energy, strengthening the immune system, and prompting the body to release growth hormone, is marked by ________ waves.

The neurological impairments found in schizophrenic patients have also been studied in the unaffected twins of schizophrenic patients. Compared to the neurological impairments of "well" twins, the neurological impairments in their schizophrenic

a. marked by more activity in the occipital lobe. b. marked by a larger hippocampus and smaller amygdala. c. marked by a smaller hippocampus and amygdala. d. about the same as the "well" twin.

Where do new genetic variations come from? After a genetic variation exists, what would cause its frequency in the population increase until it was fairly common?

What will be an ideal response?