Search results
Results From The WOW.Com Content Network
Mosaic Down syndrome is diagnosed when there is a mixture of two types of cells: some cells have three copies of chromosome 21 but some cells have the typical two copies of chromosome 21. [13] This type is the least common form of Down syndrome and accounts for only about 1% of all cases. [ 92 ]
Genetics of Down syndrome. Down syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on chromosome 21, either in whole ( trisomy 21) or part (such as due to translocations ). The effects of the extra copy varies greatly from individual to individual, depending on the extent of the extra copy ...
Down syndrome is a genetic disorder that often results in distinct physical differences and intellectual disability. According to the Centers for Disease Control, each year about 6,000 babies are ...
Chronic infantile neurologic cutaneous and articular syndrome. Chronic Lyme disease. Chronic prostatitis/chronic pelvic pain syndrome. Churg–Strauss syndrome. Chédiak–Higashi syndrome. Claude's syndrome. Clinically isolated syndrome. CLOVES syndrome. COACH syndrome.
In honor of Down Syndrome Awareness Month, which happens every October, we rounded up some informative facts about the chromosomal condition.
Dup - Duplication of a gene or genes. C – Whole chromosome extra, missing, or both (see chromosome abnormality) T – Trinucleotide repeat disorders: gene is extended in length. A cherry red spot, which can be a feature of several storage disorders, including Tay–Sachs disease. Disorder. Chromosome. Mutation.
A guide to Down syndrome including symptoms and diagnosis of this genetic condition.
Trisomy 21, one of the three types of Down syndrome, indicates that an individual has a duplicate of chromosome 21. The extra chromosome changes how one’s brain and body develop, and can lead to ...