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Question: Answered & Verified by Expert
Which of the following statements does not hold true for restriction enzymes?
BiologyBiotechnology - Principles and ProcessesNEET
Options:
  • A They recognize a palindromic nucleotide sequence.
  • B All restriction enzymes are endonucleases.
  • C These enzymes are isolated from viruses and several eukaryotic protists.
  • D They produce the same kind of sticky ends in different DNA molecules.
Solution:
2236 Upvotes Verified Answer
The correct answer is: These enzymes are isolated from viruses and several eukaryotic protists.
Restriction enzymes are enzymes which have the ability to recognize and cut a particular sequence of DNA. These enzymes are isolated from prokaryotic bacterial cells.

These enzymes recognizes a palindromic sequence of nucleotide i.e a sequence which makes the same word when read forward and backward.

They are endonucleases.

In different DNA molecules, they produce the same types of sticky ends.

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