50. Eukaryotic mRNA can be degraded in the cell through the following pathways, EXCEPT
(A) decapping.
(B) poly( A ) shortening.
(C) endonucleolytic cleavage.
(D) restriction digestion.
(E) exonucleolytic cleavage.

1. 題目解析這道題目考察的是真核生物...