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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Which base is normally used in the synthesis of RNA but not in the synthesis of DNA?
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adenine
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uracil
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guanine
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cytosine
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Explanation:
Detailed explanation-1: -Uracil. The fact that uracil is present in RNA and not DNA contributes to the ability of RNA to be degraded easily. This allows the cell to change which genes are being expressed, as the older RNAs do not stick around for very long.
Detailed explanation-2: -RNA contains cytosine and uracil as pyrimidine bases while DNA has cytosine and thymine as pyrimidine bases.
Detailed explanation-3: -Nucleic Acids: DNA and RNA Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the thymine is replaced by uracil (U).
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