Final answer:
A mutation in the DNA sequence TTG can result in a different amino acid being coded.
Step-by-step explanation:
The original DNA sequence TTG codes for the amino acid leucine. However, if there is a mutation in the sequence, resulting in a different nucleotide being present in the codon, it may lead to a different amino acid being coded. Without specific information about the mutated nucleotide, it is not possible to determine the exact amino acid that will be coded.