In reviewing hospital security tapes, several parents are observed trying to do physical harm to their children. These parents may be diagnosed with ________, a rare mental disorder in which parents fabricate or induce illness or injury in their children

A genetic female (XX) can develop male genitals if __________

a) too much estrogen is present during the embryonic stage. b) too much androgen is present during the embryonic stage. c) not enough androgen is present during the embryonic stage. d) the hypothalamus fails to signal the pituitary to begin development of sex characteristics.

__________ twins are to identical twins as __________ twins are to fraternal twins

a. Homozygous; heterozygous c. Dizygotic; monozygotic b. Heterozygous; homozygous d. Monozygotic; dizygotic