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BIO NMDCAT Ribonucleic acid (RNA)
nmdcat.online July 3, 2026

18. An analysis of a certain viral RNA reveals that it does not follow Chargaff’s rules because it

A. Contains uracil instead of thymine
B. Is single-stranded
✓
C. Contains ribose instead of deoxyribose
D. Is folded into secondary structures

📝 Explanation

Chargaff's rules apply only to double-stranded nucleic acids where base pairing forces a 1:1 ratio between complementary bases.

📖 Additional Information

  • Contains uracil instead of thymine
  • Is single-stranded
  • Contains ribose instead of deoxyribose
  • Is folded into secondary structures

Chargaff's rules apply only to double-stranded nucleic acids where base pairing forces a 1:1 ratio between complementary bases.

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