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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A, U (adenine, uracil)
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C, G (cytosine, guanine)
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U, T (uracil, thymine)
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U, A (uracil, adenine)
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Detailed explanation-1: -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). The chemical structures of A, G, C, T, and U are shown in (Fig.
Detailed explanation-2: -DNA (top) includes thymine (red); in RNA (bottom), thymine is replaced with uracil (yellow).
Detailed explanation-3: -Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine. In a DNA molecule, the nucleotide thymine (T) is used in place of uracil.
Detailed explanation-4: -It is written in 4 letters–A, C, G, and T. These four letters come in pairs–A is always paired with T, and C is always paired with G. RNA, on the other hand, has a letter U instead of a T, and its letters don’t come in pairs.
Detailed explanation-5: -RNA consists of four nitrogenous bases: adenine, cytosine, uracil, and guanine.