BRAINCAKEEffects of Mutations
No effect - the protein may function as normal. This could be because the mutation is a silent mutation. The mutation might have occurred in an intron or the same amino-acid or a similar amino-acid might have been incorporated. If the protein is an enzyme, the mutation might not be in the active site.
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Key terms in this lesson
- codon
- A sequence of three consecutive bases on mRNA (or DNA) that codes for a specific amino acid or a stop signal during protein synthesis.
- mutation
- A random change in the base sequence of DNA (a gene mutation) or in the structure or number of chromosomes (a chromosome mutation).
- intron
- A non-coding section of a gene or pre-mRNA molecule that is removed by splicing before translation.
More in Genetics and Variation
- The Genetic Code
- Mutations
- Change in Protein Function
- Sickle-cell Anaemia
- Causes of mutations
- Chromosome Mutations
- Gene Regulation
- Controlling Transcription
All 36 lessons in Genetics and Variation · All AQA A-level Biology topics