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

64. The sequence of a segment of coding DNA strand is 5′-ATGCTA-3′. The corresponding sequence on the mRNA transcript will be

A. 5'-AUGCUA-3'
✓
B. 3'-AUGCUA-5'
C. 5'-UACGAU-3'
D. 5'-TACGTA-3'

📝 Explanation

The coding (sense) DNA strand matches the mRNA transcript sequence exactly, with the sole exception that thymine (T) is replaced by uracil (U).

📖 Additional Information

  • 5'-AUGCUA-3'
  • 3'-AUGCUA-5'
  • 5'-UACGAU-3'
  • 5'-TACGTA-3'

The coding (sense) DNA strand matches the mRNA transcript sequence exactly, with the sole exception that thymine (T) is replaced by uracil (U).

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