- Chromosome, marker
- 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.
Medical dictionary. 2011.
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Marker assisted selection — or marker aided selection (MAS) is a process whereby a marker (morphological, biochemical or one based on DNA/RNA variation) is used for indirect selection of a genetic determinant or determinants of a trait of interest (i.e. productivity,… … Wikipedia
Marker — may refer to: Marker (linguistics), a morpheme that indicates some grammatical function Marker (telecommunications), a special purpose computer A set of sewing patterns tightly arranged within a rectangle that is placed over cloth to be cut… … Wikipedia
marker chromosome — marker chromosome. См. маркерная хромосома. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Marker chromosome — 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.… … Wikipedia
Chromosome — For a non technical introduction to the topic, see Introduction to genetics. Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2)… … Wikipedia
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 … Medical dictionary
Chromosome landing — The genetic technique of chromosome landing is a method of cloning of a gene of interest from a clone library. It is based on the principle that the expected average between marker distances can be smaller than the average insert length of a… … Wikipedia
Marker — A piece of DNA that lies on a chromosome so close to a gene that the marker and the gene are inherited together. A marker is thus an identifiable heritable spot on a chromosome. A marker can be an expressed region of DNA (a gene) or a segment of… … Medical dictionary
Chromosome 15 (human) — Human chromosome 15 Chromosome 15 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 15 spans about 106 million base pairs (the building material of DNA) and represents between 3% and 3 … Wikipedia
Chromosome — A visible carrier of the genetic information. The 3 billion bp (base pairs) in the human genome are organized into 24 distinct, physically separate microscopic units called chromosomes. All genes are arranged linearly along the chromosomes. The… … Medical dictionary