Cloning Vectors
Plasmids which are maintained as multiple copy number per cell are known as

cryptic plasmids
none of these
stringent plasmids
relaxed plasmids

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Cloning Vectors
Conjugative plasmids

exhibit antibiotic resistance
do not exhibit antibiotic resistance
carry transfer genes called the tra genes
do not carry transfer genes

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Cloning Vectors
Cosmids lack

cleavage site for the insertion of foreign DNA
marker genes coding for replication
origin of replication
genes coding for viral proteins

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