A polypeptide has the following amino acid sequence:
Met-Ser-Pro-Arg-Leu-Glu-Gly

The amino acid sequence of this polypeptide was determined in series of mutants listed in parts a. through e. For each mutant, indicate the type of change that occurred in the DNA (single-base substitution, insertion, deletion) and the phenotypic effect of the mutation (nonsense mutation, missense mutation, frameshift, etc.). (you will need the genetic code figure online or in the book)
a. Mutant 1: Met-Ser-Ser-Arg-Leu-Glu-Gly
b. Mutant 2: Met-Ser-Pro
c. Mutant 3: Met-Ser-Pro-Asp-Trp-Arg-Asp-Lys
d. Mutant 4: Met-Ser-Pro-Glu-Gly
e. Mutant 5: Met-Ser-Pro-Arg-Leu-Leu-Glu-Gly