Cloning Vectors
Phagemid consist of

plasmid vector carrying origin of replication of plasmid only
plasmid vector carrying λ attachment (λ att) site
plasmid vector carrying origin of replication of λ phage only
plasmid vector carrying λ phage's cos site

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Cloning Vectors
Charon vectors are different from EMBL vectors because

they have more extensive range of restriction targets with in their polylinkers.
physical separation of lambda arm from central fragment is not required
physical separation of lambda arm from central fragment is required
both (a) and (b)

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Cloning Vectors
Conjugative plasmids

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

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