variable number tandem repeats
What variable number tandem repeats means in Biology A-Level, as defined for AQA.
Definitions of variable number tandem repeats
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain variable number tandem repeats in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Short base sequences repeated many times between genes, where the number of repeats at a given position varies between individuals and is inherited.
A short base sequence repeated in tandem at a locus, where the number of times it is copied varies between individuals.
Topics that use variable number tandem repeats
- DNA, genes and chromosomes (AQA A-Level)
- Genetic fingerprinting (A-level only) (AQA A-Level)
Related terms
- gel electrophoresis
- alleles
- base sequence
- chromatin
- circular organelle DNA
- crossing over
- degenerate code
- DNA hybridisation
Using variable number tandem repeats in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Biology questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge