Cloning Vectors
Which of the following is not true about phagemid?

Contain λ att site
Contain functional origin of replication of the plasmid and λ phage
May be propagated as a plasmid or as phage in appropriate strain
Can only be propagated as phage

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Cloning Vectors
Conjugative plasmids

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

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Cloning Vectors
Cosmids lack

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

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