A genetic mutation that causes a codon that should code for a specific amino acid to be changed into a stop codon results in a shortened protein product and is known as
A.
a frame shift mutation.
B.
a chromosomal mutation.
C.
a nonsense mutation.
D.
a silent mutation.
because a nonsense mutation is a mutation in which a sense codon that corresponds to one of the twenty amino acids specified by the genetic code is changed to a chain-terminating codon.