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NEET 2010
Exam
NEET
Year
2010
Subject
Zoology
Chapter
Biotechnology - Principles and Processes

NEET 2010 · Zoology · Biotechnology - Principles and Processes

Which one of the following palindromic base sequences in DNA can be...

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

Options

  1. A5′−CGTTCG−3′5^{\prime}-\mathrm{CGTTCG}-3^{\prime} 3'-ATGGTA-5'
  2. B5'-GATATG-3' 3'-CTACTA-5
  3. C5′−GAATTC−3′5^{\prime}-\mathrm{GAATTC}-3^{\prime} 3′−CTTAAG−5′3^{\prime}-\mathrm{CTTAAG}-5^{\prime}
  4. D5'-CACGTA-3' 3′−CTCAGT−5′3^{\prime}-\mathrm{CTCAGT}-5^{\prime}

Correct answer

C. 5′−GAATTC−3′5^{\prime}-\mathrm{GAATTC}-3^{\prime} 3′−CTTAAG−5′3^{\prime}-\mathrm{CTTAAG}-5^{\prime}

Step-by-step 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 (ie, both strands are read 5′→35^{\prime} \rightarrow 3 ). Out of the given options 5′− GAATTC-3 3-CTTAAG-5 \begin{aligned}& 5^{\prime}-\text{ GAATTC-3 }\\ & 3 \text{-CTTAAG-5 } \end{aligned}is a palindromic sequence that can be cut at about the middle by particular restriction enzyme.
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