Q. Deletion of a single AT base pair from codon number 4 can cause a frameshift mutation in a protein-coding gene. Which of the following additional mutations will restore the reading frame back to “normal” such that the original stop codon will still function? (Note that the amino acid sequence will not necessarily be restored back to normal). Adding a base pair into each of the next two codons. Adding a GC base pair back in where the AT pair was deleted. Adding one base to the next codon and deleting one base from the one after that. Deleting a base pair from each of the next two codons.

Biology 2e
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ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter14: Dna Structure And Function
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Problem 37CTQ: An adult with a history of tanning has his genome sequenced. The beginning of a protein-coding...
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Q. Deletion of a single AT base pair from codon number 4 can cause a frameshift mutation in a protein-coding gene.

Which of the following additional mutations will restore the reading frame back to “normal” such that the original stop codon will still function? (Note that the amino acid sequence will not necessarily be restored back to normal).

  1. Adding a base pair into each of the next two codons.
  2. Adding a GC base pair back in where the AT pair was deleted.
  3. Adding one base to the next codon and deleting one base from the one after that.
  4. Deleting a base pair from each of the next two codons.

 

A. 1,2 and 3

B. 1 and 3

C. 2 and 4

D. 4 only

E. All of 1,2,3 and 4 are correct

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