16. Cos site of the cosmids
A. consists of 12 bases
B. helps whole genome in circularization and ligation
C. both (a) and (b)
D. contains cleavage site
17. M 13 is an example of
A. filamentous phage
B. single stranded DNA vector
C. both (a) and (b)
D. plasmid
18. Phagemid vectors are
A. combination of plasmid and phage λ
B. combination of phages and cosmid
C. phages carrying properties of plasmids
D. all of the above
19. Single-stranded vectors are useful
A. for sequencing of cloned DNA
B. for oligonucleotide-directed mutagenesis
C. for probe preparation
D. all of the above
20. Inserted DNA in λ gt 11 can be expressed as
A. β-galactosidase fused protein
B. free protein in the cytoplasm
C. free protein that is secreted out
D. all of the above
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