genetic marker

genetic marker   n.  A gene or DNA sequence having a known location on a chromosome and associated with a particular gene or trait. Genetic markers associated with certain diseases can be detected in the blood and used to determine whether an individual is at risk for developing a disease.

Main Entry: genetic marker
Function: noun
: a readily recognizable genetic trait, gene, DNA segment, or gene product used for identification purposes especially whenclosely linked to a trait or to genetic material that is difficult to identify called also marker

genetic marker n.
A gene phenotypically associated with a particular, easily identified trait and used to identify an individual or cell carrying that gene.

genetic marker   A gene or DNA sequence having a known location on a chromosome. Genetic markers associated with certain diseases can be used to determine whether an individual is at risk for developing an inherited disease.