Answer: GATCC
Explanation: A nucleotide contains three main molecules: A ribose sugar, a nitrogenous base and a phosphate group.
The nitrogenous bases are five: Adenine, Thymine, Uracil, Cytosine and Guanine. In DNA, the bases found are Adenine, Thymine, Cytosine and Guanine. In base pairing, Guanine (G) pairs with Cytosine (C) and Adenine (A) pairs with Thymine (T).
