試題詳解

45. DNA subjective to genetic mutation or environmental lotion can have point mutations, but those mutations may not affect physiological functions by the proteins because:
(A) the mutations do not change the amino acid encoded.
(B) the mutations change lhe encoded amino acids that are not critical for the functions of proteins.
(C) the mutations do affect the functions of proteins, but ofter proteins compensate for their functions.
(D) None of the above.
(E) All of the above.