Regarding Down syndrome, which of the following statements is FALSE?
A) The older a women is when she become pregnant, the greater her risk of giving birth to a child with Down syndrome.
B) In a small percentage of cases, an older father is the source of the extra chromosome.
C) Down syndrome is a hereditary condition, that is, it tends to run in families.
D) Down syndrome children have an extra 21st chromosome with the condition being known as trisomy-21.

Question

Regarding Down syndrome, which of the following statements is FALSE?
A) ​The older a women is when she become pregnant, the greater her risk of giving birth to a child with Down syndrome.
B) ​In a small percentage of cases, an older father is the source of the extra chromosome.
C) ​Down syndrome is a hereditary condition, that is, it tends to run in families.
D) ​Down syndrome children have an extra 21st chromosome with the condition being known as trisomy-21.

Quizplus · Accepted Answer

Down syndrome is not a hereditary condition, it is caused by the presence of an extra chromosome 21. The risk of having a child with Down syndrome does increase with maternal age, but it is not a hereditary condition that runs in families.

Regarding Down Syndrome, Which of the Following Statements Is FALSE