I: | Agar Gel electrophoresis is useful in analysis of DNA. |
II: | DNA is generally positively charged due to its nitrogenous bases so an electrical field forces it to move toward a negative pole. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | Both I and II are incorrect |
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I: | Plasmid can be used as a vector in recombinant DNA technology experiments. |
II: | Plasmid is an extrachromosomal, circular, double-stranded DNA found in some bacteria. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | Both I and II are incorrect |
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Assertion (A): | Thermostable DNA dependent DNA polymerase is used in Polymerase Chain Reaction |
Reason (R): | Such enzymes do not require primers and can initiate DNA synthesis |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
3. | (A) is True but (R) is False |
4. | Both (A) and (R) are False |
Assertion (A): | In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. |
Reason (R): | Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. |
1. | Both (A) and (R) are True and the (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True but the (R) is not the correct explanation of (A) |
3. | (A) is True but (R) is False |
4. | Both (A) and (R) are False |
Assertion (A): | When constructing rDNA, the vector DNA should never be cut by the same restriction endonuclease that was used to cut the donor DNA |
Reason (R): | Use of same restriction endonuclease will generate same kind of sticky ends retarding the function of DNA ligase. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
3. | (A) is True but (R) is False |
4. | Both (A) and (R) are False |
I: | This stage is after the biosynthetic stage. |
II: | The processes include separation and purification. |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
1. | EcoR I | 2. | Hind II |
3. | Bam HI | 4. | Sma I |
I: | The used medium is drained out from one side while the fresh medium is added from the other. |
II: | The cells are maintained in their physiologically most active log/exponential phase. |
III: | A larger biomass is produced leading to higher yields of desired proteins. |
1. | Only I and II are correct |
2. | Only I and III are correct |
3. | Only II and III are correct |
4. | I, II and III are correct |
I: | The gene that was not inactivated helps in selecting the transformants. |
II: | The gene that was insertionally inactivated helps in selection of recombinants. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | I, II and III are correct |