Genetic marker

{
  "id": "MLC-T-ONC-003488",
  "term": "Genetic marker",
  "field": "Oncology and biomedicine",
  "definitions": [
    "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.",
    "A sequence of DNA with a known physical location on a chromosome. Genetic markers and genes that are close to each other on a chromosome tend to be inherited together. Genetic markers vary between individuals to the extent that they can be used to help find a nearby gene causing a certain disease or trait within a family. Examples of genetic markers are single polymorphism nucleotides (SNPs), restriction fragment length polymorphisms (RFLPs), variable number of tandem repeats (VNTRs), microsatellites, and copy number variants (CNVs). Genetic markers may or may not have a known function."
  ],
  "references": [
    "NCI Dictionary of Cancer Terms",
    "NCI Dictionary of Genetics Terms"
  ],
  "url": "https://mlchart.com/terminology/oncology/genetic-marker/"
}