The specific palindromic sequence which is recognized by EcoRI is [NEET-2020]

(A)5'- GGAACC - 3' 3'- CCTTGG - 5'
(B)5'- CTTAAG - 3' 3'- GAATTC - 5'
(C)5'- GGATCC - 3' 3'- CCTAGG - 5'
(D)5'- GAATTC - 3' 3'- CTTAAG - 5'

The NCERT line that answers it

Verbatim line

EcoRI cuts the DNA between bases G and A only when the sequence GAATTC is present in the DNA

Chapter: Biotechnology: Principles and Processes
Section: 9.2 Tools of Recombinant DNA Technology

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'EcoRI cuts the DNA between bases G and A only when the sequence GAATTC is present in the DNA', which directly provides the specific palindromic sequence 5'-GAATTC-3' recognized by EcoRI, matching option D exactly.

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