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DNA

deoxyribonucleic acid

adenine

nitrogen base complementary to thymine

thymine

nitrogen base complementary to adenine

cytosine

nitrogen base complementary to guanine

guanine

nitrogen base complementary to cytosine

nucleotide

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

replication

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

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