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[A]: Plasmids are small accessory rings ...

[A]: Plasmids are small accessory rings of DNA found in some bacteria that carry genes.
[R]: Plasmids that are used as a vector have been removed from bacteria and have had a foreign gene inserted into them

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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The correct Answer is:
A
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[A]: Recombinant DNA contains DNA from two or more sources. [R]: Plasmids are small extra rings of DNA in bacteria that carry genes not present in the bacterial chromosome

[A]: Vectors carry only the foreign DNA/gene into the host cell. [R]: Plasmids can carry recombinant DNA but viruses can not.

[A] : Mitochondria have evolved from bacteria . [R] : Mitochondria and Bacteria both have circular DNA .

The technique of insertion of a desired gene into DNA of plasmid vector

In genetic engineering, a DNA segment (gene) of interest, is translated to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors Statement (A) A bacterium (B) Plasmid (C) Plasmodium (D) Bacteriophage

Two spherical conductors A and B, having equal radii and carrying equal charges on them, repel each other with a force F when kept apart at some distance. A third spherical uncharged conductor C having the same radius is brought in contact with A. It is then detached from A and brought in contact with B and finally removed away form both. What is the new force of repulsion between A and B?

Two spherical conductors B and C having equal radii and carrying equal charges in them repel each other with a force F when kept apart at some distance. A third spherical conductor having same radius as that of B but uncharged is brought in contact with B, then brought in contact with C and finally removed away from both. The new force of repulsion between B and C is

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
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  2. [A]: The preparation of recombinant DNA re- quires restriction enzymes...

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  3. [A]: Plasmids are small accessory rings of DNA found in some bacteria ...

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  4. [A]: Proteins are polymers of amino acids. [R]: Nucleic acids are p...

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  5. [A): Prokaryotic cells do not contain repressor protein [R]: They ...

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  6. [A]: If a population is of dominant genotype AA, then the frequency of...

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  7. [A]: In paracentric inversions the centromere is outside the inverted ...

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  8. [A]: Polyploidy increases the tolerance of plants towards extreme clim...

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  9. [A]: Haemophillia is a genetically linked dis- ease. [R]: The carri...

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  10. [A]: Cytoplasmic male sterility is observed in maize. [R]: The cyto...

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  11. Assertion: DNA synthesis occurs in G(1) and G(2) periods of cell cycle...

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  12. [A]: Sickle-cell anaemia is a genetically de- termined disorder affect...

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  13. [A]: The deleted region of long arm of chro- mosome 7 contains the ela...

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  14. [A]: Centromere is the primary constriction on the metaphase chromosom...

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  15. [A]: Dolly, a sheep is an example of cloning. [R]: Cloning in anoth...

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  16. Assertion (A) : Replication and transcription occur in the nucleus but...

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  17. [A]: Cycads were prevalent during Jurassic period. [R]: Jurassic pe...

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  18. [A]: Evolution is descent with modification. [R]: Evolution is der...

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  19. [A]: Isolation is a mechanism which prevents interbreeding among other...

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  20. [A]: Mesozoic era is known as the 'Age of Reptiles'. [R]: It was ...

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