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What are molecular scissors so called? W...

What are molecular scissors so called? Write their use in biotechnology.

Text Solution

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Molecular scissors are the restriction enzymes that are used for cutting of DNA at specific locations. Molecular scissors cut DNA at desired sequences between base pairs. Since they cut DNA at desired sequences and generate sticky ends that facilitate to join with host genome or vector DNA. This helps in introduction of desired gene and introduce into vectors for expression.
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Knowledge Check

  • The term 'molecular scissors' refers to

    A
    recombinant DNA
    B
    restriction enzymes
    C
    Taq polymerase
    D
    polindromic nucleotide sequences.
  • Assertion: DNA segments can be excised by 'molecular scissors' or 'chemical scalpels' that biotechnologists call restriction enzymes Reason: Restriction enzymes are synthesised by microbes as a defence mechanism and are specific endonucleases which can cleave double-stranded DNA.

    A
    If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
    B
    If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
    C
    If Assertion is true but the Reason is false.
    D
    If both Assertion and Reason are false.
  • Similar Questions

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    The term ''molecular scissors'' generally refers to

    From isolated DNA from a cell culture with seven desired genes, DNA segment can be excised by molecular scissors or chemical scalpels what biotechnologists call as

    Which of the following is called molecular scissors in context of biotechnology? (a) DNA ligase (b) Restriction exonucleases (c) DNA polymerase (d) Restriction endonucleases

    (a) What are ‘molecular scissors’ ? Give one. example. (b) Explain their role in recombinant DNA technology.

    Match the organism with its use in biotechnology:

    Give any two microbes that are useful in biotechnology.