A) GGCC
B) GAATTC
C) AAGCTT
D) CTGCAG
Correct Answer: B
Solution :
Eco Rl comes from e.co//, strain R. Eco Rl recognises dyad (mirror) sequences. Dimers sit on both strands of DNA simultaneously. Recognition site for Eco Rl is \[5-G-A-A-T-T-C-3\] \[3-C-T-T-A-A-G-5\] This DNA sequence is the six base sequence recognised by the restriction enzyme Eco Rl.
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