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  4. Which of the following is essential for DNA synthesis ?

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Q. Which of the following is essential for DNA synthesis ?

BHUBHU 2002

Solution:

Folic acid is essential for synthesis of nitrogenous bases i.e., purines and pyrimidines. These bases are basic unit of DNA molecules. So, follc acid is necessory for DNA synthesis.
Sources of follc acid are liver, kidney, soyabean.
Deflciency causes-anaemia. Vitamin-D, vitamin $K$ and vitamin-E are essential for bone formation; blood clotting and fertility respectively.