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CGP EDU Academic Team
Published on: August 11, 2026
The couplings between base units of DNA is through
Text Solution
Verified by ExpertsThe correct answer is:
A
Purines form hydrogen bonds with Pyrimidines (Purines and Pyrimidines are base units); Adenine bonds only to Thymine with two hydrogen bonds; Cytosine bonds only to Guanine with three hydrogen bonds. This arrangement of two nucleotides binding together across the double helix is called a base pair. As hydrogen bonds are not covalent, they can be broken and rejoined relatively easily.
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