Which of the following is the correct matching nucleotide sequence for CTAGG?

GATCC

AGCTT

CTAGG

GGATC

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).

GATCC

Explanation:

c=g

t=a

t=a

g=c