GCSE Biology (AQA)
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Inheritance, Variation and Evolution
Reproduction
DNA's Genetic Code
1:11
DNA Structure
Spec
4.6.1.5
- The genetic code instructs the body on protein synthesis.
- A sequence of three bases codes for a specific amino acid.
- Example sequence provided: GG, A.
- Three bases produce one amino acid.
- The sequence of bases determines the amino acid order in protein production.
- A nine-base sequence codes for three different amino acids.
- Specific coding examples: CC for amino acid X, GTA for amino acid Y, CTT for amino acid Zed.
- Amino acids are assembled to form proteins.
- Rearranging base sequences alters amino acid order.
- Understanding the function of the DNA genetic code is essential.
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