Explain Why Dna Is Made Up Of Molecules Called Nucleotides

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DNA is made up of molecules called nucleotides. The order of these nitrogen bases is what determines DNA's instructions, or genetic code. Nucleotides are attached together to form two long strands that spiral to create a structure called a double helix. The double helix structure is like a ladder, the phosphate and sugar molecules are the sides. The bases on one strand pair with the bases on another strand: adenine pairs with thymine, and guanine pairs with cytosine.

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