試題詳解

18. Which of the following type of mutations is correctly defined?
(A) silent: change of a single base in the non-coding region of a gene
(B) missense: substitution of a single base results in a premature stop codon
(C) nonsense: substitution of a single base results in a complete change of amino acid sequence
(D) frameshift: deletion of a single base results in a single amino acid change
(E) none of the above