单选题
Which one of the following is incorrect for the biogenesis of eukaryotic ribosomes?( )
A、
25-50% of the pre-rRNA is degraded
B、
Pre-rRNA binds to ribosomal protein
C、
Pre-rRNA is cut to form three classes of rRNA
D、
Pre-rRNA is methylated
E、
The rRNA gene for the 40S subunit is transcribed separately
【正确答案】
E
【答案解析】
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