1.

The two strands of DNA are not identical but are complementary. Explain.

Answer»

Solution :The DNA has a double helix STRUCTURE. The two strands of DNA are held by the HYDROGEN BONDS between the bases on two strands. Thymine(T) pairs with ADENINE(A) through two hydrogen bonds and cytosine (C) pairs with guanine (G) through three hydrogen bonds. Thus, two strands are complementary to each other.


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