A Point Mutation Can Be a ________

A point mutation can be a ________. (Select all that apply)

A) silent mutation resulting in no effect on protein structure
B) missense mutation resulting in a change in one amino acid in a protein
C) nonsense mutation that results in an amino-acid coding codon changed to a termination codon
D) frameshift mutation caused by addition or deletion of a base pair that results in a shift in the reading frame of the mRNA causing a change in all amino acids occurring after the frameshift