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