Answer:
A. 5-CAATTC-3'
Explanation:
Due to the spontaneous mutation of the cytosine, becoming uracil, the change in the new complementary strand would occur as follows:
5'-GAATCG-3 '-> Cytosine deamination = 5'-GAATUG-3' -> the new replicated complement is = 5-CAATTC-3 '
Remembering that Uracil equals a thymine in DNA, for that reason the mutated uracil base becomes Adenine when its synthesized in the new strand
Your answer is B.
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