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What makes up the “rungs” of the DNA molecule?

Please help What makes up the “rungs” of the DNA molecule?-example-1
User Zilma
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Other combinations of the atoms form the four bases: thymine (T), adenine (A), cytosine (C), and guanine (G). These bases are the rungs of the DNA ladder. It also takes two bases to form a rung, one for each side of the ladder ! I hope this helps .
User Personjerry
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