Biology A-Level
frameshift
What frameshift means in Biology A-Level, as defined for AQA.
Definitions of frameshift
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Reference: AQA
Caused when the number of bases changed is not a multiple of three, altering every subsequent triplet.
Every base after a deletion shifts back into a new triplet, so most codons downstream are altered.
Topics that use frameshift
- Alteration of the sequence of bases in DNA can alter the (AQA A-Level)
- Genetic diversity can arise as a result of mutation or during (AQA A-Level)
Related terms
- tertiary structure
- alleles
- amino acid sequence
- base analogues
- chemical mutagens
- chromosome content diagrams
- codons and anticodons
- crossing over
Using frameshift in the exam
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