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In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?

Options

  1. A5 ' G A A T T C 3 ' 3 ' C T T A A G 5 '
  2. B5 ' C T C A G T 3 ' 3 ' G A G T C A 5 '
  3. C5 ' G T A T T C 3 ' 3 ' C A T A A G 5 '
  4. D5 ' G A T A C T 3 ' 3 ' C T A T G A 5 '

Correct answer

A. 5 ' G A A T T C 3 ' 3 ' C T T A A G 5 '

Step-by-step solution

A sequence of base pairs that reads same on the two strands when orientation of reading is kept the same, is called a palindromic nucleotide sequence in the DNA. For example restriction enzyme EcoRI recognises a particular palindromic sequence:- 5 ' G A A T T C 3 ' 3 ' C T T A A G 5 '

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