Educational biology content — not medical advice.

Classical genetics

Single-nucleotide variant: definition

A single-nucleotide variant (SNV) is a DNA difference at one base position among individuals.

A single-nucleotide variant (SNV) is a DNA difference at one base position among individuals.

See the full topic page for mechanisms, examples, and self-checks.

In coursework, keep this term connected to its topic page so you learn mechanism, not only a one-line definition. If two glossary terms feel interchangeable, open the related comparison page and write a difference in your own words.

Also known as: SNV, SNP, single nucleotide polymorphism

Open the full learning page (if published under the same slug)

Continue on Chromatin.net

Related lessons

Practice