Any gene that can be readily recognized by its phenotypic effect, and which can be used as a marker for a cell, chromosome, or individual carrying that gene. Also, any detectable polymorphism used to identify a specific gene.
A locus that has a useful phenotype which can be used for genetic selections or screens.
allele, DNA marker or cytogenetic marker used as experimental probe to keep track of an individual, a tissue, a cell, a nucleus, a chromosome, or a gene.
A landmark that identifies a unique location on a chromosome.
A gene that exists as two or more readily distinguished alleles and whose inheritance can therefore be followed during a genetic cross, enabling the map position of the gene to be determined.
Any gene whose presence can be readily detected by its phenotypic expression and which is used to locate other genes. Also detectable RFLP used to identify a specific linked gene or an individual carrying a gene of interest.
Any character that acts as a signpost or signal of the presence or location of a gene or heredity characteristic in an individual in a population.
a specific gene that produces a recognizable trait and can be used in family or population studies
a certain piece of DNA (a gene or simply a piece of DNA without any known purpose) with an identifiable physical location whose inheritance can be followed
a gene that produces an observable trait and has a known location on a chromosome, the rod-shaped structures that carry genes
an allele that is identified with its genetic trait
an unusual sequence of DNA located near an unknown disease-causing gene
a recognizable trait which can be used to identify a genetic locus, a linkage group, or a recombination event
a reference point on a chromosome
a specific set of base pair sequences which describes a particular "code" of directions for a cell
a variant allele that is used to label a biological structure or process throughout the course of an experiment
a variation in the nucleotide sequence of the DNA, known as a mutation
Any part of the DNA molecule that expresses variability within a population and that can be used for analysis of that population.
A sequence of DNA that has a known location on a chromosome and is known to be associated with a particular gene or trait. Some genetic markers are associated with certain diseases. Detecting these genetic markers in the blood can be used to determine whether an individual is at risk of developing the disease. They are also used as a reference point for mapping other genes.
An allele or genotype, typically unrelated to the phenotype of interest, that is nonetheless useful for predicting the phenotype due to the marker's proximity to the locus that is functionally producing the phenotype.
A DNA sequence at a unique physical location in the genome, which varies sufficiently between individuals that its pattern of inheritance can be tracked through families and/or it can be used to distinguish among cell types. A marker may or may not be part of a gene. Markers are essential for use in linkage studies and genetic maps to help scientists to narrow down the possible location of new genes, and to discover the associations between genetic mutations and disease.
Any segment of DNA that can be identified, or whose chromosomal location is known, so that it can be used as a reference point to map or locate other genes. Any gene which has an identifiable phenotype that can be used to track the presence or absence of other genes on the same piece of DNA transferred into a cell.
A detectable piece of DNA closely linked to a gene of interest whose precise location is unknown. 289
A gene that is used to identify an individual disease or trait, or trace its inheritance within a family.
A gene or other identifiable portion of DNA whose inheritance can be followed. Source : Human Genome Project Information
a landmark that identifies a certain spot on a chromosome.
A gene or other identifiable portion of DNA whose inheritance can be followed. See also: chromosome, DNA, gene, inherit
A unique physical location on a chromosome, which may be experimentally identified and its inheritance pattern monitored. Genetic markers may be genes or DNA segments with no known function.
a DNA fragment that has been mapped to a specific site on a chromosome and which can be used to help identify traits of interest.
A detectable gene or DNA fragment used to identify alleles at a linked locus.
A segment of DNA whose physical location on a chromosome is known, so that the inheritance of the gene can be followed.
Any locus that, by virtue of allelic variation between individuals, serves to distinguish one group of chromosomes from another at a particular location. Depending on the context, microsatellites, SNPs and polymorphisms in proteins may all serve as genetic markers.
A specific tissue type or gene, similar to a blood type, that is passed on from parents to their children. Some genetic markers are linked to certain rheumatic diseases.
A characteristic that serves as a sign of the presence or location of a gene, chromosome, or hereditary characteristic in an individual. At the molecular level, a genetic marker whose location is known is a gene that is linked (in close proximity) to a gene of interest (whose location is unknown), such as a gene that causes disease. To be linked, the marker gene exists within 20 centimorgans of the disease locus and, as a result, usually does not become separated from the gene of interest during genetic recombination.
A trait (coat color, ear shape, or blood type) that can be used to identify offspring of specific parents. When two boars sire pigs in the same litter, the off spring of each boar may be identified by genetic markers.
A small region of DNA along a chromosome that can be used to indicate the location of a gene or other DNA sequence.
Alteration in DNA that may indicate an increased risk of developing a specific disease or disorder.
A segment of DNA with an identifiable physical location on a chromosome.
sequence of DNA transmitted within a family in the same way and at the same time as the gene involved in the genetic disease, and that is used as a marker when searching for the gene.
An inherited (genetic) characteristic that can be recognized in a tested individual and is used in differentiating genetically related individuals from nonrelated individuals.
An identifiable substance that is associated with a normal or an abnormal gene.
A genetic marker is a known DNA sequence that can be identified by a simple assay.