The table shows the DNA triplet codes for some amino acids.The base sequence on the template DNA strand coding for part of a polypeptide is shown.
CCA ACG GCG TTA TTC GCA
Two mutations occur in this sequence during DNA replication.
Which mutated template DNA strand would result in a shorter polypeptide?
1 )
CCA ACA GCA TTA TTC GCA
2 )
CCA ACG CCG TTA TTC GCC
CCA ACG GCG TTG ATC GCA
4 )
CCT ACG GCG TTA TTC GGA
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