Genes are sections of DNA, They're found on chromosomes.
Genes code for proteins (polypeptides) - they contain the instructions to make them.
Proteins are made from amino acids.
Different proteins have a different number and order of amino acids.
It's the order of nucleotide bases in a gene that determine the order of amino acids in a protein.
Each amino acid is coded for by a sequence of three bases (called a triplet) in a gene.
Different sequences of bases code for different amino acids.
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