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Question
Which essential sequences are present in plasmid pBR322?
Options
Only HindIII and EcoRI
The ori sequence and the rop gene
Only beta-galactosidase and a chromogenic substrate
Only ampR and tetR
MCQ
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Solution
pBR322 contains the ori sequence and a rop gene as essential sequences. The rop gene codes for proteins involved in plasmid replication.
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