Chargaff’s rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn’t pair with C, despite that being a purine and a pyrimidine.
Describe why the 2 strands of the double helix are considered to be complementary. The base-pairing rules states that Adenine always pairs with Thymine and Guanine always pairs with Cytosine. State the base-pairing rules of DNA. It relates because DNA is made up of complementary nucleotides to make the double helix.
Why is base pairing called complementary?
Complementary Base Pairing in the DNA Molecule This meant that only two kinds of base pairs were possible: GC (or CG) and AT (or TA). So the two strands of DNA are said to complement each other. This is what we call complementary base pairing. Complementary base pairing explains Chargaff’s findings.
