Biology A-Level
exons
What exons means in Biology A-Level, as defined for AQA.
Definition of exons
Check what you remember
Read the wording for your board, then hide it and explain exons in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Sections of a gene whose base sequence codes for amino acids, and they are expressed.
Topics that use exons
- DNA, genes and chromosomes (AQA A-Level)
Related terms
- alleles
- base sequence
- chromatin
- circular organelle DNA
- crossing over
- degenerate code
- endosymbiotic theory
- functional RNA
Using exons in the exam
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