The recognition sequence of Sau3A is 5’ |GATC 3’ and that for DpnI is 5’ GA|TC 3’. Which of the statements is true?

A. The ends created by both the enzymes are compatible

B. The ends created by both the enzymes are not-compatible

C. The ends created by DpnI are single stranded

D. The ends created by Sau3A are single stranded

Explanation: Though the recognition sequence is the same, the ends are not compatible. It is so because both the enzymes leave double stranded ends and thus can’t be ligated.

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