Font Size
A
A
A

Definition of Marker chromosome

Marker chromosome: An abnormal chromosome that is distinctive in appearance but not fully identified. A marker chromosome is not necessarily a marker for a specific disease or abnormality, but it can be distinguished under the microscope from all the normal human chromosomes. For example, the fragile X (FRAXA) chromosome was once called the marker X.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=4284
Last Editorial Review: 3/30/2012

Medical Dictionary Definitions A - Z

Search Medical Dictionary



NIH talks about Ebola on WebMD


Medical Dictionary