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

In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?
  1. 5' G T A T T C 3'; 3' C A T A A G 5'
  2. 5' G A T A C T 3'; 3' C T A T G A 5'
  3. 5' G A A T T C 3'; 3' C T T A A G 5'
  4. 5' C T C A G T 3'; 3' G A G T C A 5'

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'

Asked in: NEET 2022 (Phase 1)

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