→_→B.. separating strands of D. N. A.
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☜☆☞ additional information
D. N. A = dioxyribose neuclic acid
￣へ￣￣へ￣￣へ￣￣へ￣￣へ￣￣へ￣￣へ￣
its functions :::
1. it helps to form the basic structure of body
1. it helps to form the basic structure of body i,e (cell) .
2. it is responsible for the gene and hereditary changes of human body.
