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sar12 Group Title

If an error in transcription causes the last cytosine in an mRNA sequence that was supposed to read UUG AUC CAA UGC to be replaced with a guanine, which of the following do you predict would happen?

  • 2 years ago
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  1. sar12 Group Title
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  2. sar12 Group Title
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    a. Nothing will happen since the last codon will still correspond to threonine. b. Only three amino acids will be produced instead of four. c. The first amino acid in the chain will be glycine instead of arginine. d. The last amino acid in the chain will be tryptophan instead of cysteine.

    • 2 years ago
  3. Reaper Group Title
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    OK, these types of questions are fairly straightforward. The only thing you need to look at for now is the last triplet, which is changed from UGC to UGG. Now, since your table has U instead of T, it's already in mRNA rather than DNA, so there's no need to translate (you should be safe from this kind of thing if you're in a high school class, but my university genetics professor once tried this). That's good. So then you just look at the table. Find the U on the left and the G on the top. This box then contains the four possible UG_ combinations. (The last letter is on the right, but it's just as easy to just look in the box.) Since UGC corresponds to cysteine, and UGG to trytophan, you're answer would be...

    • 2 years ago
  4. sar12 Group Title
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    d?

    • 2 years ago
  5. sar12 Group Title
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    is the answer d?

    • 2 years ago
  6. sar12 Group Title
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    are u there?

    • 2 years ago
  7. konus Group Title
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    D

    • 2 years ago
  8. sar12 Group Title
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    so i was right., thanks can u help me with the question before this one?

    • 2 years ago
  9. winwithwill Group Title
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    was that right @sar12

    • 2 months ago
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