Answer: It controls copy number and initiates replication.
- A It codes for a selectable marker
- B It binds the ribosome to start translation of the gene
- C It cuts the DNA at specific sites
- D It controls copy number and initiates replication
Correct answer: D. It controls copy number and initiates replication
Explanation: The ori is the sequence where replication starts; any linked DNA replicates from it, and it also governs the copy number of the vector in the host.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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