genetic marker

Pronunciation:(jeh-NEH-tik MAR-ker)

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.Cancer.govPatient

Definition: An identifiable segment of DNA (e.g., Single Nucleotide Polymorphism [SNP], Restriction Fragment Length Polymorphism [RFLP], Variable Number of Tandem Repeats [VNTR], microsatellite) with enough variation between individuals that its inheritance and co-inheritance with alleles of a given gene can be traced; used in linkage analysis.GeneticsHealth professional

marcador genéticoSecuencia específica de ADN de la que se conoce su ubicación en un cromosoma. Hay muchos marcadores genéticos en cada cromosoma. Por lo general, los marcadores genéticos y los genes que están muy cerca entre sí en un cromosoma se heredan juntos (pasan de padres a hijos). A veces, esto ayuda a los investigadores a encontrar un gen cerca de un marcador que puede ser la causa de determinada enfermedad o rasgo en una familia. Los polimorfismos de nucleótido simple (PNS) y los microsatélites son ejemplos de marcadores genéticos.Cancer.govPatient Date last modified: 2016-09-01Genetic MarkerMarcador genético