A single nucleotide addition followed by a second alteration in the DNA causes the following amino acid sequence
-His-Thr-Glu-Asp-Trp-Leu-His-Gln-Asp-
to change to
-His-Asp-Arg-Gly-Leu-Ala-Thr-Ser-Asp-
a.What are the old and new mRNA nucleotide sequences? Try to eliminate as many ambiguities in the nucleotide sequence as you can and be sure to show all your work. Hint: common mutations are substitutions, inversions, and insertion/deletions.
b.Can you determine exactly which nucleotide was added? What about which was deleted? Be sure to justify your answer.