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Molecular Basis Of Inheritance

Question
CBSEENBI12002557
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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle be some particular restriction enzyme?

  • 5'-CGTTCG -3'
    3'-ATCCTA-5'

  • 5'-GATATG-3'
    3'-CTACTA-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

  • 5'-CACGTA-3'
    3'-CTCAGT-5'

Solution

C.

5'-GAATTC-3'
3'CTTAAG-5'

The palindromic base sequence is a sequence in double -stranded nucleic acids that read the same on both strands when reading one strand from left to right and the other from right to left (i.e both strands read 5' ->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 a particular restriction enzyme.

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