See Also: marker chromosome(medicine)
Chromosome, marker(health)
Marker(casino)
Marker(medicine)
marker(dictionary)
marker pen(dictionary)
marker(dictionary)
marker trait(medicine)
Tumor marker(health)
selectable marker(medicine)

Chromosome, marker (health)


An abnormal chromosome that is distinctive in appearance but not fully identified. A marker chromosome is not a "marker" of a specific disease. It is a marker chromosome merely in the sense that it can be distinguished under the microscope from all of the normal human chromosomes. For example, the fragile X chromosome was once called the marker X.