The given information does not clearly state a specific mutation. However, it appears to be a substitution mutation. This is based on the change in the amino acids (Met-Arg-Thr-Leu) to the corresponding DNA codons (TAC-GTA-TGG-AAT). A substitution mutation occurs when one base pair is replaced with another in the DNA sequence, which ultimately leads to a change in the amino acid sequence during protein synthesis.
