Single Biggest Cancer Dictionary in the World

What is

genetic marker

?

Pronunciation: /ʤəˈnɛtɪk ˈmɑrkər/

genetic marker

Definition

A specific sequence of DNA at a known location on a chromosome. There are many genetic markers on each chromosome. Genetic markers and genes that are close to each other on a chromosome are usually inherited (passed from parent to child) together. This may help researchers find a gene near a marker that may cause a certain disease or trait within a family. Examples of genetic markers are single polymorphism nucleotides (SNPs) and microsatellites.