If PBR322 is cleaved with Bam HI to insert foreign DNA, which of the following selectable marker is used to screen recombinants from non- recombinants
(A) ampR
(B) tetR
(C) both
(D) none

Which of the following can be used to insert the recombinant DNA into the animal cell?

How is insertional inactivation of an enzyme used as a selectable marker to differentiate recombinants from non-recombinants?

Which of the following techniques serve the purpose of early diagnosis ? (A) Recombinant DNA technology (B) PCR (C ) ELISA

If pBR322 cloning vector is cut by Pvu I enzyme for the formation of rDNA then which of its marker gene helps in the selection of recombinants ?

If a person obtains transformants by inserting a recombinant DNA within the coding sequence of enzyme beta-galatosidase, he will separate out recombinants from non-recombinats by which of the following observations ?

If we ligate a foreign, DNA at the Barn HI site of tetracycline resistance gene in pBR322 the recombinant plasmid will:

(a) A recombinant vector with a gene of interest inserted within the gene of beta-galactosidase enzyme, is introduced into a bacterium. Explain the method that would help in selection of recombinant colonies from non-recombinant ones. (b) Why is this method of selection referred to as ''insertional inactivation''?

RNA contains which of the following base in place of Thymine of DNA- (a) Thymine (b) Uracil (c) Adenine (d) None of these

If we ligate a foreign, DNA at the Barn HI site of tetracycline resistance gene in pBR322 the recombinant plasmid u ill:

Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material (A) Easily translocated (B) Chemically non-reactive (C) Easily digested by animals (D) Osmotically inactive (E) Synthesized during photosynthesis The useful proeprties ar :