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Question

Ethidium bromide is a commonly used stain for DNA molecules during gel electrophoresis. How does it stain the DNA?

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Consistent with its planar aromatic structure, ethidium bromide aligns itself between the paired bases in a DNA duplex. Correct Consistent with its planar aromatic structure, ethidium bromide binds DNA via H-bond. Ethidium bromide binds to the 3'-hydroxyl group of DNA. Ethidium bromide binds to the 5'-phosphate group of DNA.

Explanation

genetic engineering analysis shows vector design and pathway extension enable vitamin production. Consequently Consistent with its planar aromatic structure, ethidium bromide aligns itself... emerges as the valid choice since it utilizes recombinant DNA and metabolic engineering, aligning with established principles in biotechnology literature.

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