Which of the following represents palindromic sequence in DNA?
A
5' - GAATTC - 3'
3' - CTTAAG - 5'
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B
5' - CCAATG - 3'
3' - GAATCC - 5'
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C
5' - CATTAG - 3'
3' - GATAAG - 5'
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D
5' - GATACC - 3'
3' - CCTAAG - 5'
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Solution
The correct option is A 5' - GAATTC - 3'
3' - CTTAAG - 5' Palindromic sequences are a pair of complimentary nucleic acid sequences that reads the same from 5' → 3' or 3' → 5' in both the sequences. Eg: 5' - GAATTC - 3' 3' - CTTAAG - 5'