Multiple choice Amniocentesis can be used to determine whether or not a developing foetus will have daibetes have Down syndrome be obesed will be intelligent Reveal answer Fill a bubble to check yourself B Correct answer Explanation When amniocentesis is done after the 15th week of pregnancy, there is 99+% accuracy in detecting Down syndrome and most other problems related to gross chromosomal abnormalities, including neural tube defects such as spina bifida.