Question

DNA consists of two______chains​

Answer 1

Answer:

A DNA molecule (deoxyribonucleine acid) is made of two chains of several thousands of linked nucleotides. Each nucleotide consists of a phosphate group, a deoxyribose and a nitrogenous base (Fig. 1). The four nitrogenous bases that occur in DNA are: adenine (A), guanine (G), thymine (T) and cytosine (C)

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