Biology A-Level
non-coding DNA
What non-coding DNA means in Biology A-Level, as defined for AQA.
Definitions of non-coding DNA
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Reference: AQA
Much of the nuclear DNA in eukaryotes does not code for polypeptides, and exists between genes and within genes.
DNA that is not translated, including introns and long stretches of repeated sequences between genes.
Topics that use non-coding DNA
- DNA, genes and chromosomes (AQA A-Level)
- Using genome projects (A-level only) (AQA A-Level)
Related terms
- introns and exons
- splicing
- alleles
- base sequence
- chromatin
- circular organelle DNA
- comparing species
- crossing over
Using non-coding DNA in the exam
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