This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
|ed maternal serum a-FP is seen in : 
Select and explain. 
A. Multiple pregnancy, B. Trisomy 21, C. Open neural tube defect, D. IUD
B: Trisomy 21
Answer: B: Trisomy 21 
Explanation: Ans. is b i.e. Trisomy 21Low levels of MSAFP (Maternal serum alpha feto protein) are seen in :Chromosomal trisomyGestational trophoblastic diseasesBlighted ovumIncreased maternal weightOverestimated gestational age.