Which woman is at the greatest risk of bearing a baby with Down syndrome?
A) Gemma, age 15, who lives in a rural community
B) Melina, age 24, who lives with a smoker
C) Ursula, age 33, who was exposed to electromagnetic waves
D) Kay, age 42, who lives in an urban area
Question 2
About 70 percent of individuals with Down syndrome who live past age 40 show symptoms of __________ disease.
A) Tay-Sachs
B) Huntingtons
C) Alzheimers
D) kidney
