Home
Class 12
BIOLOGY
With respect to DNA fragmentation ,State...

With respect to DNA fragmentation ,Statement (A) Gel electrophoresis and elution are two important processes. Statement (B) After staining with ethidium bromide it has to be exposed to UV light.

A

Only A is correct.

B

Both A and B are correct.

C

Only B is correct.

D

Only A is correct and B is incorrect

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPER 4

    SARAS PUBLICATION|Exercise EXERCISE|90 Videos

  • MODEL QUESTION PAPER 6

    SARAS PUBLICATION|Exercise EXERCISE|89 Videos

Similar Questions

Explore conceptually related problems

Diagram shows a typical agarose gel showing migration of DNA fragments . a. Which of the bands has the largest and smallest DNA fragments ? b. How can you make fragments of DNA for electrophoresis ? c. Explain separation of DNA fragments using electrophoresis. d. Point out a method to visualize the separated DNA fragments after electrophoresis .

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

Which of the following statements are correct ? (i) Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome site, but between the same two bases on the opposite strands. (ii) Hind ll always cuts DNA molecules at a particular point by reconginisng a specific sequence of six base pairs. (iii) Separated DNA fragments cannot be visualised without staining on an agarose gel electrophoresis. (iv) 'Ori' is the sequence responsible for controlling the copy number. (v) DNA is a positively charged molecule.

Match the terms given in column I with their definitions in column II and select the correct answer from codes given below. {:(Column I,Column II),(A."Transformation",(i)"Sequences cut by restriction enzymes"),(B."Recognition site",(ii)"Process by which DNA fragments are separated based on their size"),(C."Gel electrophoresis",(iii)"Plasmid DNA that has incorporated human DNA"),(D."Recombinant DNA",(iv)"Process by which bacteria take up pieces of DNA from the environment"):}

Match the words in box 'A' with the most accurate answers from box 'B' {:(" "A," "B),("i. Lysozyme","a. T-DNA"),("ii. Agrobacterium tumifaciens","b. DNA stain"),("iii. Gel electro-phoresis","c. Escherichia coli"),("iv. Ethidium bromide","d . Restriction enzymes"),("v. Eco Ri","e. Bacterial cell breakage"),("vi. Molecular scissors","f. Separation of DNA fragments"):}

SARAS PUBLICATION-MODEL QUESTION PAPER 5-EXERCISE
  1. The formation of two species from one ancestral species is known as:

    Text Solution

    |

  2. A scrubber in the exhaust of a chemical industrial plant removes:

    Text Solution

    |

  3. With respect to DNA fragmentation ,Statement (A) Gel electrophoresis a...

    Text Solution

    |

  4. The pioneer species in Xerarch and hydrarch succession are respectivel...

    Text Solution

    |

  5. Hibernating animals have tissues containing mitochondria with a membra...

    Text Solution

    |

  6. Which of the following conditions correctly describes the manner of de...

    Text Solution

    |

  7. Natural killer lymphocytes are an example for:

    Text Solution

    |

  8. The codon AUG has dual function. It is initiation codon and also codes...

    Text Solution

    |

  9. Identify the wrong statement:

    Text Solution

    |

  10. Continued self-pollination results in:

    Text Solution

    |

  11. Which vector can clone only a small fragment of DNA?

    Text Solution

    |

  12. Seeds without fertilisation is obtained from:

    Text Solution

    |

  13. With respect to Eichhornia Statement A: It drains off oxygen from w...

    Text Solution

    |

  14. Identify the phylum A Animalia rarr Tissue grade rarr Bilateral rar...

    Text Solution

    |

  15. During sewage treatment biogas produced includes:

    Text Solution

    |

  16. The ancestors of salamanders are:

    Text Solution

    |

  17. Hissardale is a breed of sheep developed by

    Text Solution

    |

  18. The nitrogen base found only DNA is also called:

    Text Solution

    |

  19. The hormone which acts on Sertoli cells and stimulates the process of ...

    Text Solution

    |

  20. Which of the following statement is correct?

    Text Solution

    |