In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?
5' GAATTC3'; 3' CT T A A G 5'
5'CTCAGT3'; 3' GAGTCA 5'
5' G T A T T C3' ; 3' CATA A G5'
5' GATACT3'; 3' CTATGA 5'
Palindromic sequences are the sequences which are read back and forth in the same way.
Therefore, only option 1 has a palindromic sequence, the rest are not palindromic sequences.
Hence the correct option is 1.