NEET Biology question

Which of the following correctly depicts the recognition site for EcoRI?

(A)5'-G-T-C-G-A-C-3' / 3'-C-A-G-C-T-G-5', cut between C and G on each strand
(B)5'-C-A-G-C-T-G-3' / 3'-G-T-C-G-A-C-5', cut between A and G on each strand
(C)5'-G-A-A-T-T-C-3' / 3'-C-T-T-A-A-G-5', cut between T and C on each strand
(D)5'-G-A-A-T-T-C-3' / 3'-C-T-T-A-A-G-5', cut between G and A on each strandCorrect

Answer: (D)

Solution

Options (a) and (b) show the wrong six-base recognition sequence altogether (not GAATTC), and option (c) shows the correct sequence but an incorrect cut position, whereas

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Question ID VK-125219