Chromosomal abnormalities

Which of these syndromes has the worst prognosis?

• Down syndrome

• Triple X syndrome

• Edwards syndrome

• Cri du chat syndrome

Cri du chat syndrome is an aneuploidy? (true/false)

What is the median survival of patients with Down syndrome?

• 46 years

• 47 years

• 48 years

• 49 years

________ ___ is a crucial risk factor for chromosomal abnormalities.

Cri du chat syndrome is caused by deletion on chromosome ...

• 5

• 7

• 18

• 21

Triple X syndrome is often a life-threatening condition. (true/false)