Alow intake of increases the likelihood that an infant will be born with a neural tube defect.

folic acid.

Explanation:

Folic acid is one of the vitamins of vitamin B complex. It is essential for RNA and DNA synthesis and when lacking in the mitosis (cell division) is impaired.

Folic acid is found in liver, leafy green vegetables, brown rice, nuts, beans and milk.

It is involved in the development of the embryonic neural tube which later becomes spinal cord and skull.

Deficiency during pregnancy can be due to poor diet, multiple pregnancy, effect of drugs such as anti epileptic drugs.

In the first trimester, women are encouraged to take prophylactic folic acid of 0.4mg/day .

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