Question

The restriction enzyme EcoR1 recognizes the DNA sequence GAATTC. Which DNA strands will be cut by EcoR1?

I.
TTCAGGAATTCGGAAACC AAGTCCTTAAGCCTTTGG

II.
TGAATCGAACCTG ACTTAGCTTGGAC

III.
TTAAGCGGCCGAATTCAGTCCA
AATTCGCCCGCTTAAGTCAGGT

IV.
CAGTAGGATTTCTGTGTC
GTCATCCTAAAGACACAG


I and III is the correct solution.