Question: A mutation has occurred during DNA replication while the cell preparing to divide. As a result of…

A mutation has occurred during DNA replication while the cell
preparing to divide. As a result of this, the codon ACU of mRNA has
now become ACC. Interestingly, there is no change to the protein
being made. Why not?

A.This is a silent mutation.

B. The original amino acid isoleucine was changed to leucine,
but they are the same varitation of amino acid so no change to the
protein.

C. The mutation was fixed, and even though the codon is now ACC
the correct amino acid is put into place for the normal
protein.

D. This is not a mutation that causes a big change, so there is
no change to the protein being made.