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STD 12 - 9. biotechnology principlas and process — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 9. biotechnology principlas and process4 Marks
MCQ
More advancement in genetic engineering is due to
  • ✓
    Restriction endonuclease
  • B
    Reverse transcription
  • C
    Protease
  • D
    Zymase
✓

Answer

Correct option: A.
Restriction endonuclease
a
Endonucleases are enzymes that produce internal cuts called cleavage $DNA$ molecule. $A$ class of endonucleases cleavage $DNA$ only within or near those sites which have specific base sequences, such endonucleases are known as restriction endonucleases and sites recognized by them are called recognition sites. Restriction endonucleases have major role in genetic engineering

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$A$ - Restriction endonucleases are also called'molecular scissors;

$R$ - When fragments generated by restrictionendoncleases are mixed, they join togetherdue to their sticky ends.

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