the coding strand of DNA has the same sequence as the mRNA, except that there are U’s in the mRNA where there are T’s in the DNA. The first triplet of nucleotides AAU (underlined) is in frame for coding, and encodes Asparagine. 45 50 55 60 65 5’—A A C G A A U C G U C G C C A A C U A A G A G –-3’ Which of the following DNA mutations is almost certain to result in a shorter than normal protein?
A mRNA sequence is shown below. Note that the coding strand of DNA has the same sequence as the mRNA, except that there are U’s in the mRNA where there are T’s in the DNA. The first triplet of
45 50 55 60 65
5’—A A C G A A U C G U C G C C A A C U A A G A G –-3’
Which of the following DNA mutations is almost certain to result in a shorter than normal protein?
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at position 56 a change from G to C |
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an insertion of a G after the G at position 56 |
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inversion of region 56-59 (G C C A) |
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an delete the C at position 52 |
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None of the above. |
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