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Down syndrome or Down's syndrome, [12] 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.
An anaphase lag of a chromosome 21 in a Down syndrome embryo leads to a fraction of euploid cells (2n cells), phenomenon described as "aneuploidy rescue". There is considerable variability in the fraction of cells with trisomy 21, both as a whole and tissue-by-tissue. This is the cause of 1–2% of the observed Down syndromes. [4]
Lily breaks the mold of some people's concept of individuals with Down syndrome. She holds a job and is an important member of her community. She is able to live on her own and do everything a regular member of society can do. By inviting viewers into the details of her daily life, she proves that she is no different from anyone else.
In the 21st century, those terms are no longer used as medical terminology, deemed an unacceptable, offensive and misleading description of those with Down syndrome. [1] The terminology change was brought about both by scientific and medical experts, [ 2 ] as well as people of Asian ancestry, [ 2 ] including those from Mongolia.
The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely. [3] At the same time, they enjoy a rich social and emotional awareness. [4] Down syndrome is the most common chromosome abnormality in humans, [3] occurring in about one per 1000 babies born each ...
An 8-year-old boy with Down syndrome became a hero after he alerted his 14-year-old sister of a fire in their Colorado home, helping them get out on time before it was engulfed in flames ...
The National Down Syndrome Society (NDSS) is an American organization that offers support to people with Down syndrome, their families, friends, teachers, and coworkers, and educates the general public about Down syndrome. The mission of the NDSS is to be the leading human rights organization for all individuals with Down syndrome. [1]
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