EDWARDS SYDROME Trisomy 18 is the second most common trisomy and occurs when a baby has three of the eighteenth chromosome /t is this extra genetic material that causes the problems associated with Trisomy 18 Edwards syndrome affects around 7 i3,000, but only7i5,000 6 000 live births b(72301076020)Edward’s syndromE • Trisomy 18 is the second most common trisomy and occurs when a baby has three of the eighteenth chromosome. • It is this extra genetic material that causes the problems associated with Trisomy 18. • Edward's syndrome affects around 1 in 3,000, but only 1 in 5,000 – 6,000 live births. Dania M. Jacob (12301016020) 2