A marker chromosome (mar) is a structurally abnormal chromosome in which no part can be identified. The significance of a marker is very variable as it depends on what material is contained within the marker. It is essentially a partial trisomy. However sometimes the marker is composed of inactive genetic material and has little or no effect. Ther...
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http://en.wikipedia.org/wiki/Marker_chromosome
An abnormal chromosome that is distinctive in appearance but not fully identified. For example, the fragile x chromosome was once called the marker x. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
Type: Term Definitions: 1. a chromosome with cytologically distinctive characteristics.
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http://www.medilexicon.com/medicaldictionary.php?t=17487
Marker chromosome: 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 ca...
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http://www.medterms.com/script/main/art.asp?articlekey=4284
No exact match found.
