Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme?
5′ CACGTA 3′; 3′ CTCAGT 5′
5′ CGTTCG 3′; 3′ ATGGTA 5′
5′ GATATG 3′; 3′ CTACTA 5′
5′ GAATTC 3′; 3′ CTTAAG 5′
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