Is it true that a neural tube defect is a chromosomal mutation or a gene mutation?

Yes and more: Neural tube defects can be brought on by genetics, nutrition, and environmental factors. Women who are deficient in Folic Acid before or during pregnancy are at a higher risk for neural tube defects. Women who are obese, have poorly controlled diabetes, or take medication such as Dilantin, Tegretol, or Depakote are at higher risk for neural tube defects or anencephaly. I hope this helps. Take c