NEET AIPMT SOLVED PAPER SCREENING 2010

  • question_answer
    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'

    Correct Answer: C

    Solution :

    The palindromic base sequence is a sequence in double-stranded nucleic acids that reads the same on both strands when reading one strand from left to right and the other from right to left (i.e., both strands are read \[5'\to 3'\]. Out of the given options 5?GAATTC?3' 3?CTTAAG?5' is a palindromic sequence that can be cut at about the middle by particular restriction enzyme.


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