2. 下列哪一個不屬於真核 mRNA 轉錄後修飾(post-transcriptional modification)的作用?
(A) Capping of the 5' end with GMP
(B) Addition of poly A to the 3' end
(C) Capping at the 3' end with AMP
(D) Methylation of ribose 2'- hydroxyl groups

1. 題目解析這道題目是考查真核細胞中...