Edward syndrome refers to which trisomy?

Edward syndrome refers to which trisomy?

• A. edward syndrome
• B. patau syndrome
• C. down syndrome
• D. turner syndrome

Answer: (A)

Edward syndrome is the condition caused by an extra copy of chromosome 18, i.e., trisomy 18. It is one of the recognized autosomal trisomies and typically results from nondisjunction during meiosis. Infants with Edward syndrome often have growth restriction, micrognathia, clenched hands with overlapping fingers, rocker-bottom feet, and congenital heart defects, with many not surviving beyond infancy. The other conditions map to different chromosomal abnormalities: Patau syndrome is trisomy 13, Down syndrome is trisomy 21, and Turner syndrome is monosomy X.

Edward syndrome is the condition caused by an extra copy of chromosome 18, i.e., trisomy 18. It is one of the recognized autosomal trisomies and typically results from nondisjunction during meiosis. Infants with Edward syndrome often have growth restriction, micrognathia, clenched hands with overlapping fingers, rocker-bottom feet, and congenital heart defects, with many not surviving beyond infancy. The other conditions map to different chromosomal abnormalities: Patau syndrome is trisomy 13, Down syndrome is trisomy 21, and Turner syndrome is monosomy X.