Most of the gene expression occur in the ( )
A. replication level
B. transcription level
C. transcription initiation
D. translation level
E. post-translational level
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Cis-acting element is ( )
A. TATA box and CCAAT box
B. DNA sequences that have regulatory function
C. 5′flanking sequence
D. 3′flanking sequence
E. non-coding sequence
A complete set of genes of a given species called ( )
A. genome
B. gene
C. DNA
D. chromosome E. cDNA
The repressor protein will bind to which part of the lactose operon ( )
A. promoter
B. operator
C. gene i
D. gene Y
E. gene Z
Encoding product of the i gene of the lactose operon is ( )
A. one kind of activator protein
B. one kind of repressor protein
C. one kind of β-galactosidase
D. Permease
E. Transacetylase
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