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Are the phosphate groups on the interior or the exterior of the DNA molecule?
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Are the phosphate groups on the interior or the exterior of the DNA molecule?

User Ayano
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the double helix is hydrogen bonded through the bases only so the bases are inside the helix only

as adenine combines with thymine and guanine with cytosine

phosphate are in the exterior of it

sugar groups constitute the double helix.

User Xbd
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