Cloning Vectors
Cryptic plasmids

exhibit one phenotypic traits
do not exhibit any phenotypic trait
exhibit many phenotypic traits
exhibit antibiotic resistance

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Cloning Vectors
Plasmid incompatibility is

inability of a plasmid to grow in the host
None of these
both (a) and (b)
inability of two different plasmids to coexist in the same host cell in the absence of selection pressure.

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Cloning Vectors
Cosmids lack

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

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