Biology A (Salters-Nuffield) A-Level
Substitution
What Substitution means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Substitution
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Read the wording for your board, then hide it and explain Substitution in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
A change where one base is replaced by another during DNA replication, which may alter a single codon and hence one amino acid.
Topics that use Substitution
- Topic 2: Genes and Health (Pearson Edexcel A-Level)
Related terms
Using Substitution in the exam
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