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 causes moderate to severe intellectual disability and a shortened life expectancy of around 49 years.

Question

Quizplus · Accepted Answer

Down syndrome is not a hereditary condition, meaning it is not passed down through genes, but rather a result of a chromosomal abnormality. The extra chromosome 21 is typically a random occurrence and not related to family history. The other statements are true: the risk of Down syndrome increases with maternal age (A), in a small percentage of cases the extra chromosome is from the father (B), and Down syndrome can cause intellectual disability and a shortened life expectancy (D).

Regarding Down Syndrome,which of the Following Statements Is FALSE