Biology A-Level
non-overlapping code
What non-overlapping code means in Biology A-Level, as defined for AQA.
Definition of non-overlapping code
Check what you remember
Read the wording for your board, then hide it and explain non-overlapping code in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The code is read in triplets from a fixed starting point, so each base belongs to one triplet only.
Topics that use non-overlapping code
- Alteration of the sequence of bases in DNA can alter the (AQA A-Level)
Related terms
- amino acid sequence
- base analogues
- codons and anticodons
- DNA replication errors
- downstream codons
- frameshift
- premature stop codon
- R group interactions
Using non-overlapping code in the exam
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