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Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. [1] [12] There are three types of Down syndrome, the ...
Down syndrome is a genetic condition, but it isn’t hereditary. Neither trisomy 21 nor mosaicism is inherited from a parent. These cases of Down syndrome are the result of a random cell division ...
Down syndrome (sometimes called Down’s syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome — hence its other name, trisomy 21. This causes physical ...
slower speech. lower IQ. a flattened face. small ears. shorter height. eyes that tend to slant up. white spots on the iris of the eye. Down syndrome is sometimes accompanied by a number of other ...
Down syndrome is a genetic condition that causes mild to significant physical and developmental problems. People with Down syndrome (DS) are born with an extra chromosome. Chromosomes are bundles ...
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 ...
Navy Marine Corps Intranet. The Navy/Marine Corps Intranet ( NMCI) is a United States Department of the Navy program which was designed to provide the vast majority of information technology services for the entire Department, including the United States Navy and Marine Corps .
Down syndrome, or trisomy 21, is a genetic disorder where babies have an extra 21st chromosome. Chromosomes are packages of genes that tell the body how to grow. An extra chromosome changes how ...