In RNA, which of the bases is replaced by uracil?
Correct answer: D. Thymine
- A. Cytosine
- B. Adenine
- C. Guanine
- D. Thymine
Explanation
Uracil forms a nucleoside with only ribose sugar while thymine forms the same with only deoxyribose sugar. Other nitrogen bases (i.e. adenine, guanine, cytosine) produce nucleosides with both sugars.
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