A nonrandom association between inborn propensities and environmental experience is referred to as the __________ correlation

Rejected and neglected adolescents ________ than their more popular peers

A) engage in social activities less often B) have fewer friends C) have fewer contacts with the opposite sex D) all of the above

More than ___ genes have been identified that show increased activity during sleep

a. 100 b. 10 c. 1,000 d. 500