Cloning Vectors
Single stranded vectors are useful

for sequencing of cloned DNA
for oligonucleotide directed mutagenesis
All of these
for probe preparation

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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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