A 24-year-old woman has had three first-trimester spontaneous abortions

Question NO 8

A 24-year-old woman has had three first-trimester spontaneous abortions.
Which of the following statements concerning chromosomal aberrations
in abortions is true?
a. 45,X is more prevalent in chromosomally abnormal term babies than in abortus
products
b. Approximately 20% of first-trimester spontaneous abortions have chromosomal
abnormalities
c. Trisomy 21 is the most common trisomy in abortuses
d. Despite the relatively high frequency of Down syndrome at term, most Down
fetuses abort spontaneously
e. Stillbirths have twice the incidence of chromosomal abnormalities as live births