THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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adenine (A)
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thymine (T)
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cytosine (C)
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guanine (G)
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Detailed explanation-1: -Uracil is present only in RNA, whereas thymine is present only in DNA. Thus, thymine is the nitrogenous base which is not present in RNA.
Detailed explanation-2: -Final answer: Uracil nitrogen base is absent in DNA.
Detailed explanation-3: -In DNA, this pyrimidine nitrogenous base is the one that pairs up with adenine through hydrogen bonding; however, in RNA thymine is replaced with uracil.
Detailed explanation-4: -The four bases of DNA are adenine, thymine, cytosine, and guanine, abbreviated A, T, C, and G respectively. In RNA, the base thymine is not found and is instead replaced by a different base called uracil, abbreviated U. The other three bases are present in both DNA and RNA.
Detailed explanation-5: -⇒ Thymine is present in DNA but not in RNA.