22. Lytic infection of SV 40 does not occur in
A.permissive cells
B.non permissive cells
C.both (a) and (b)
D.none of these
23. Moloney-Mu-leukemia virus is an example of
A.Vaccinia virus
B.Baculo virus
C.Retro virus
D.none of these
24. Which one of the following is true about Yeast Integrative plasmids (YIp) vectors?
A.Allows transformation by using crossing over
B.Has a origin of replication and rep genes
C.Carries autonomously replicating sequence
D.Carries centromere and telomere sequences
25. The size of the genome of SV 40 is
A.7.2 kb
B.69 kb
C.5.2 kb
D.110 kb
26. YAC vectors can be used to obtain artificial chromosomes because it carries
A.centromere
B.telomere
C.autonomously replicating sequence
D.all of these
27. Maximum insert size in case of adenovirus vectors is
A.6-8 kb
B.4-6 kb
C.10-12 kb
D.20 kb
28. SV 40 vectors, in which late region replacements are done, require
A.COS cell line
B.SV 40 helper virus
C.pBR 322 vector
D.none of these
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