NEET Biology Molecular basis of Inheritance / विरासत का आणविक आधार Question Bank Nucleic acid (DNA/RNA)

  • question_answer
    The specific DNA sequence where Eco R1 cuts is  [Kerala CET  2003; Orissa JEE 2004]

    A) \[\underset{\text{TAAGCT}}{\mathop{\text{ATTCGA}}}\,\].

    B) \[\underset{\text{CTTAAG}}{\mathop{\text{GAATTC}}}\,\]

    C) \[\begin{align}   & GCTTAA \\  & CGAATT \\ \end{align}\]

    D) \[\begin{align}   & GTTCAA \\  & CAAGTT \\ \end{align}\]

    Correct Answer: B

    Solution :

    With the help of restriction enzymes to cut a DNA sequence. A restriction enzyme Eco R1 will cut DNA only if sequence \[\begin{matrix}    \text{G} & \text{A} & \text{T} & \text{T} & \text{C}  \\    \text{C} & \text{T} & \text{A} & \text{A} & \text{G}  \\ \end{matrix}\]is present.


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