The idea that the common symptoms of a disorder vary according to a person's age is known as the developmental trajectory. In this context, the term trajectory means:

Suicide rates are higher among the elderly than they are for adolescents

Indicate whether this statement is true or false.

Twins produced when a cluster of cells splits off of one ovum within 2 weeks after fertilization are called ___________ twins

a. dizygotic c. dominant b. monozygotic d. recessive