Question

what are the rungs of DNA ladder made of ​

Answer 1

Answer:

The sides of the DNA double helix ladder are made up of alternate sugar and phosphate molecules, like links in a chain. The rungs, or steps, of DNA are made from a combination of four nitrogen-containing bases—two purines (adenine [A] and guanine [G]) and two pyrimidines (cytosine [C] and thymine [T]).

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Answer 2

Explanation:

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