Which of the following is absent from the genome of a virus that utilizes DNA as its primary molecule?
A) Deoxyribose
B) Uracil
C) Guanine
D) Thymine
E) Adenine
IMAT 2023 · Question 13
Q13 - Viruses and viral replication
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The correct answer is B) Uracil.
DNA uses A, T, G and C with deoxyribose. Uracil only appears in RNA, where it replaces thymine, so it is the one missing from a DNA virus's genome.
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