LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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UGG CTC GUC CUT
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TGG CAC GTC CTA
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TGG CUC GTC CTU
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UGG CAC GUC CUA
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Detailed explanation-1: -If the base sequence of one strand of DNA is CAT, TAG, CAT, CAT, GAC, the base sequence of its complementary mRNA would be GUA, AUC, GUA, GUA, CUG. During transcription of mRNA, adenine (A) is replaced by uracil (U), thymine (T) by adenine (A), guanine (G) by cytosine (C) and cytosine (C) by guanine (G).
Detailed explanation-2: -The four bases in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).
Detailed explanation-3: -The sequence for AACGTAACG in mRNA molecule synthesized after transcription from a DNA strand shall be UUGCAUUGC. In an RNA strand, the genetic code follows the sequence of A-U, G-C, and T-A. Thus, by this genetic coding, the correct answer is option B. Was this answer helpful?
Detailed explanation-4: -A U G G A C C U G A U A U U U U G A is the base sequence in a stand of mRNA.