WebSearch - Chromosome 21

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Chromosome 21 - Genetics Home Reference
Two copies of chromosome 21, one copy inherited from each parent, form one of the pairs. ... There are many genetic conditions related to genes on chromosome 21. ...

http://ghr.nlm.nih.gov/chromosome=21

Chromosome 21 (human) - Wikipedia, the free encyclopedia
Chromosome 21 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. The trisomy of the 21 causes Down Syndrome. ...

http://en.wikipedia.org/wiki/Chromosome_21_(human)

Chromosome
Chromosome : Genes, Leukemias, Solid Tumors, and Cancer-Prone Diseases located ... Chromosome 21 - Human Protein Atlas. Chromosome 21 - Array BAC clone ...

http://atlasgeneticsoncology.org/Indexbychrom/idxa_21.html

Human Chromosome 21
A single-source launchpad to information about each human chromosome. ... Chromosome: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 X Y ...

http://www.ornl.gov/sci/techresources/Human_Genome/launchpad/chrom21.shtml

ABNORMALITIES IN CHROMOSOME STRUCTURE
... is between chromosome 14 and chromosome 21. In meiosis, a ... translocation 14;21 or the normal chromosome complement following fertilization. ...

http://www.usd.edu/med/som/genetics/curriculum/1ECHROM3.htm

Down Syndrome - Wikipedia
... caused by the presence of all or part of an extra 21st chromosome. ... The disorder was identified as a chromosome 21 trisomy by Jérôme Lejeune in 1959. ...

http://en.wikipedia.org/wiki/Down_syndrome

Down Syndrome - March of Dimes
Down syndrome is a chromosomal disorder. Affected individuals have some degree of mental retardation, characteristic ... part of chromosome 21 breaks off ...

http://www.marchofdimes.com/pnhec/4439_1214.asp

The DNA sequence of human chromosome 21.
... H, Reinhardt R, Yaspo ML; Chromosome 21 mapping and sequencing consortium. ... Chromosome 21 is the smallest human autosome. An extra copy of chromosome 21 ...

http://www.ncbi.nlm.nih.gov/pubmed/10830953

About Down Syndrome
Chromosome 21. The occurrence of Down syndrome. Down syndrome and maternal age ... cells, but will have 47 chromosomes (including an extra chromosome 21) in others. ...

http://www.bgcdownsyndrome.org/about.cfm

Disease Information from NORD, National Organization for Rare Disorders ...
National Organization for Rare Disorders is dedicated to helping people with rare, orphan diseases. Rarediseases.org ... Chromosome 21 Ring is a rare ...

http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Chromosome+21+Ring

Down Syndrome (Trisomy 21)
The term ... copies of the #21 chromosome instead of just one ... These persons have some cells with an extra chromosome 21 and others with the normal number. ...

http://www.lpch.org/DiseaseHealthInfo/HealthLibrary/genetics/downs.html

Down Syndrome Causes, Symptoms, Diagnosis, and Treatment on MedicineNet.com
Learn about Down syndrome, the most common cause of mental retardation. ... caused by the presence of an extra chromosome 21 in all cells of the individual. ...

http://www.medicinenet.com/down_syndrome/article.htm

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