Which statement concerning in vitro fertilization is false?
a. The odds of having twins or triplets may increase.
b. About 90 percent of in vitro fertilization attempts are successful.
c. The procedure is not typically covered by insurance.
d. There is an increased risk of birth defects in infants conceived using the procedure.
Question 2
How many of the following adolescents are experiencing a change in primary sex characteristics: Larry, who has acquired the ability to ejaculate; Curly, who is producing sperm; and Moe, who is experiencing growth of his scrotum?
a. none
b. one
c. two
d. three
Fertilization of an egg by a sperm.
Hippocampal Volumes of Pairs of Monozygotic Twins
Cortical Gray Matter in Monozygotic Twins Discordant for Schizophrenia
identical (left) and fraternal (right) twins
Plant Fertilization
In situ hybridization of a zebrafish embryo 48 hours after fertilization