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WAHuman BiologyQuick questions
Unit 4: Human Variation and Evolution
Quick questions on DNA, genes and the genetic code: WACE Year 12 Human Biology Unit 4
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What is the genetic code?Show answer
The genetic code is the set of rules by which the base sequence of a gene is translated into the amino acid sequence of a protein. Bases are read in groups of three, called codons or triplets, and each triplet specifies one amino acid. The order of bases therefore determines the order of amino acids, which determines the protein's shape and function. A change in the base sequence can change an amino acid and so change the protein, which is how a mutation can alter a phenotype.
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