题目内容

Which of the following refers to the inactivation of Insertional inactivation? ___________

A.Host
B.Gene of Interest
C.Gene of the vector
D.Gene of the host

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BamHI cuts the pBR322 at just one position, within the cluster of genes that code for resistance to ___________

A.Tetracycline
B.Ampicillin
C.Kanamycin
D.Gentamycin

On a medium containing ampicillin, when pBR322 recombinants were plated. Which of the following will not be able to grow? ___________

A. pBR322 containing gene of interest
B.self-ligated Pbr22
C.non-transformants
D.transformed cells

In screening for pUC8 recombinants, which color colonies will be the desired recombinants? ___________

A.Blue
B.Colorless
C.White
D.Yellowish

What is the compound X-gal? __________

A.Plasmid
B.Lactose analog
C.Antibiotic
D.Inducer