Meg has severe mental retardation, but can play any musical piece on the piano after hearing it only once. Her behavior is an example of ______ performance

Martin has just turned 50 years old, and lately he has been questioning whether his life has had any real meaning. "If I were to die today, would my life really have made a difference?"

According to the social development theory of Erik Erikson, Martin is struggling with the crisis of __________. a. proactivity vs. negativity b. generativity vs. stagnation c. ego integrity vs. despair d. contribution vs. selfishness

Meiosis results in __________ in the male and __________ in the female

A) four sperm; one ovum B) one sperm; four ova C) millions of sperm; about 40,000 ova D) four sperm; millions of ova