Questions: Down Syndrome Which statements are true about Down syndrome? It is more prevalent in women over the age of 35. It occurs in approximately one in every 700 births. It is least common in African American infants.

The answer is the first one: It is more prevalent in women over the age of 35.

Explanation for each option:

1. It is more prevalent in women over the age of 35.

   • This statement is true. The risk of having a child with Down syndrome increases with maternal age, particularly for women over the age of 35.

2. It is more prevalent in women under the age of 35.

   • This statement is incorrect. While younger women can and do have children with Down syndrome, the prevalence is higher in older women.

3. It occurs in approximately one in every 700 births.

   • This statement is true. Down syndrome occurs in about 1 in every 700 live births.

4. It is more common in African American infants.

   • This statement is incorrect. There is no evidence to suggest that Down syndrome is more common in African American infants compared to other racial groups.

5. It is least common in African American infants.

   • This statement is also incorrect. Down syndrome occurs across all racial and ethnic groups at similar rates, so it is not least common in African American infants.

Summary: The true statements about Down syndrome are that it is more prevalent in women over the age of 35 and it occurs in approximately one in every 700 births.