Which of the following is PRESENT during the preoperational period

Amphetamines are ______

a. stimulants c. opiates b. hallucinogens d. barbiturates

Early in her pregnancy, Mary used medication that included androgens, which in turn

influenced her female embryo. This exposure could cause a. male-appearing genitalia. b. the SRY gene to release androgens. c. increased ova production. d. an extra 21st chromosome.