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प्रश्न
In a DNA double helix, where are the nitrogenous bases located?
पर्याय
They face outward from the helical axis
They face inward toward each other and pair via hydrogen bonds
They are randomly distributed throughout the structure
They are located on the exterior of the double helix
MCQ
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उत्तर
In a DNA double helix, the nitrogenous bases are located in the interior of the helix, facing inward toward each other. The complementary bases form hydrogen bonds between them (A with T, G with C), while the sugar-phosphate backbone faces outward.
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