OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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UATUAGA
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ACGACTG
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CAUCAGU
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CATCAGT
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Detailed explanation-1: -mRNA is formed as a complementary strand to one of the two strands of the DNA. Three of the four nitrogenous bases that make up RNA-adenine (A), cytosine (C), and guanine (G)-are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine.
Detailed explanation-2: -AUG-CGA-UUC is the correct complementary RNA strand to the DNA strand TAC-GCT-AAG.
Detailed explanation-3: -If an mRNA strand produced had the sequence UGU-CAA, then the complementary DNA strand will have the bases that complement the bases in the mRNA strand. Therefore, the DNA complement of UGU in the mRNA strand would be ACA, and the DNA complement of CAA in the mRNA strand would be GTT.