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deoxyribonucleic acid


nitrogen base complementary to thymine


nitrogen base complementary to adenine


nitrogen base complementary to guanine


nitrogen base complementary to cytosine


building block of nucleic acids

hydrogen bonds

A weaker bond that holds 2 nucleotides together

double helix

molecular shape of DNA

covalent bond

A stronger bond that holds sugars and phosphates together

base pairing

bonds in DNA can form only between adenine and thymine and between guanine and cytosine


an identical set of DNA is created from the original double helix

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