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🧬ap biology review

Chargaff’s Rule in AP Biology

Verified for the 2027 exam
Verified for the 2027 exam•Fiveable Content Team

Definition

Chargaff's Rule states that in DNA, the amount of adenine (A) equals the amount of thymine (T), and the amount of guanine (G) equals the amount of cytosine (C).

This definition is part of Fiveable's AP Biology review, which also has guided practice questions.

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