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26/09/2020 2:55 pm
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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme?
(a) 5'.............CGTTCG.............3' 3'.............ATGGTA.............5'
(b) 5'.............GATATG.............3' 3'.............CTACTA.............5'
(c) 5'.............GAATTC.............3' 3'.............CTTAAG.............5'
(d) 5'.............CACGTA.............3' 3'.............CTCAGT.............5'
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26/09/2020 2:57 pm
(c) 5'.............GAATTC.............3' 3'.............CTTAAG.............5'
Explanation:
Palindromic sequences in DNA molecule are group of bases that forms the same sequence when read in both forward and backward direction. In the given question, only option (c) represent a palindromic sequence.