A、Though it written
B、Though written
C、It was writer
D、Written it was
A、Though it written
B、Though written
C、It was writer
D、Written it was
三、TURE OR FALSE: (10 points, 2 points for each) 1. The origins of eukaryotes are more complex than those of prokaryotes because the initiation of DNA replication and the control of the growth cycle of the organism are regulated and co-ordinated at these sites. ( ) 2. Minichromosomes are applied widely to study initiation mechanism of DNA replication in prokaryotes because the phages and plasmids are not good models. ( ) 3. Transposons (Tn) or transposable elements are small DNA sequences that can move to virtually any position in a cell genome. ( ) 4. All RNA polymerases and DNA polymerases either in prokaryotes or in eukaryotes like E.coli polymerase have a multisubunit structure. ( ) 5. TFIIF is a large multicomponent protein complex which contains both kinase and helicase activity. ( )
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