1.

The second transesterification reaction occurs between __________

A. The 3 splicing site of intron and 5 splice site of intron
B. The 3 splicing site of intron and the branch point site
C. The 5 splicing site of intron and 3 end of exon
D. The 5 end of exon and the 3 splice site
Answer» E.


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