22.tThere is no codon for the amino acid hydroxyproline, but this amino acid is a prominent feature ol collagen structure. Which of the following is a likely explanation?
(A)tHydroxyproline is substituted for proline after translation by a cut and patch mechanism.
(B)tProline is covalently modified to give hydroxyproline after translation.
(C)tThere is an alternative mechanism for synthesis of proteins that contain hydroxyproline.
(D)tAll of the above are likely explanations.
(E)tIt is not possible to fbnn a hypothesis from tiie information given.