Cloning Vectors
A plasmid can be considered as a suitable cloning vector if

All of these
it can be readily isolated from the cells
it possesses a single restriction site for one or more restriction enzymes
insertion of foreign DNA does not alter its replication properties

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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
both (a) and (b)
physical separation of lambda arm from central fragment is required

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