2q35 Deletion

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Chromosome abnormality

From Wikipedia, the free encyclopedia

A chromosome anomaly (chromosome abnormality) reflects an atypical number of chromosomes (karyotype) or a structural abnormality in one or more chromosomes. Chromosome anomalies usually occur when there is an error in cell division following meiosis or mitosis. There are many types of chromosome anomalies. They can be organized into two basic groups, numerical and structural anomalies.

Jump to: navigation, search Link to full article: http://en.wikipedia.org/wiki/Chromosome_abnormality

Deletion (genetics)

From Wikipedia, the free encyclopedia

In genetics, a deletion (also called gene deletion, deficiency, or deletion mutation) is a mutation (a genetic aberration) in which a part of a chromosome or a sequence of DNA is missing. Deletion is the loss of genetic material. Any number of nucleotides can be deleted, from a single base to an entire piece of chromosome.^[1] Deletions can be caused by errors in chromosomal crossover during meiosis. This causes several serious genetic diseases.

Deletion on a chromosome

Link to full article: http://en.wikipedia.org/wiki/Genetic_deletion

CDO was founded in 1992 by a group of seven parents raising children born with rare chromosome disorders. The Alliance of Genetic Support Groups (now the Genetic Alliance) helped CDO get its start that year, and CDO was approved as a member of the National Organization of Rare Disorders (NORD) in 1998.

With an extensive library of available up-to-date articles, detailed registry, newsletters, research opportunities, interaction with our medical advisory board, and a listserv that’s online 24 hours a day, CDO is able to provide support and information to families around the world. Link to site: http://www.chromodisorder.org/CDO/Default.aspx