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xxTIMURxx [149]
3 years ago
15

1.

Biology
2 answers:
Ad libitum [116K]3 years ago
7 0
The answer is A. Uracil hope this helps
shepuryov [24]3 years ago
5 0

Answer:

\boxed {\boxed {\sf A. \ Uracil}}

Explanation:

DNA (deoxyribonucleic acid) has two chains of nucleotides that form a double helix that resembles a twisty ladder. The nucleotides are:

  • Adenine (A)
  • Guanine (G)
  • Cytosine (C)
  • Thymine (T)

RNA (ribonucleic acid)  is different. It only has one chain of nucleotides. The bases are also different:

  • Adenine
  • Guanine
  • Cytosine
  • <u>Uracil (U) </u>

We see that RNA has a different base! It contains uracil instead of thymine. The correct answer must be A. uracil

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