Definition Of Gene Markers

A marker gene can serve as a flag for another gene sometimes called the target gene.

Definition of gene markers. Genetic marker any alteration in a sequence of nucleic acids or other genetic trait that can be readily detected and used to identify individuals populations or species or to identify genes involved in inherited disease. It can be described as a variation which may arise due to mutation or alteration in the genomic loci that can be observed. A gene dna sequence or gene product whose inheritance can be traced through a pedigree or phylogeny. A detectable genetic trait or segment of dna that can be identified and tracked.

A marker gene is a known dna sequence located nearer to the target gene with detectable and inherited properties marker genes are applicable in the genetic engineering experiments especially in the plant genetic research often. A marker gene can serve as a flag for another gene sometimes called the target gene. The various blood group systems and serum or red blood cell proteins easily detected by electrophoresis or immunodiffusion are commonly used markers. Genetic marker definition is a readily recognizable genetic trait gene dna segment or gene product used for identification especially when closely linked to a trait or genetic material that is difficult to identify.

A detectable genetic trait or segment of dna that can be identified and tracked.