LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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AUG-CAC-GCU-TTT
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ATG-CAC-GGG-TAA
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AUG-CAC-GCU-UAA
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UAC-GGG-CCC-UAA
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Detailed explanation-1: -Answer and Explanation: If a DNA strand with the sequence AATAGCGCGGTATTC is transcribed, the newly synthesized mRNA strand will have the sequence b. UUAUCGCGCCAUAAG.
Detailed explanation-2: -This leads to a total of 10 codons in the mRNA sequence AUGGCAGUGCCA as AUG, UGG, GGC, GCA, CAG, AGU, GUG, UGC, GCC, CCA.
Detailed explanation-3: -The enzyme that converts DNA into mRNA is called RNA polymerase, which attaches to the DNA double helix as shown here. Once attached, RNA polymerase can unwind the helix and begin copying one of the DNA strands to form an mRNA transcript of the gene.
Detailed explanation-4: -Answer and Explanation: The DNA triplet is the template for which complementary mRNA are coded. Adenine is coded as uracil (because RNA does not have a thymine base), cytosine as guanine, guanine as cytosine, thymine as adenine. TAC is coded as AUG and CAG as GUC.