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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. It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. The parents of the affected individual … 展开
Those with Down syndrome nearly always have physical and intellectual disabilities. As adults, their mental abilities are typically similar to those of … 展开
The extra genetic material present in Down syndrome results in overexpression of a portion of the 310 genes located on chromosome 21. This … 展开
Efforts such as early childhood intervention, therapies, screening for common medical issues, a good family environment, and work-related training can improve the development … 展开
Down syndrome is the most common chromosomal abnormality in humans. Globally, as of 2010 , Down syndrome occurs in about 1 per … 展开
The cause of the extra full or partial chromosome is still unknown. Most of the time, Down syndrome is caused by a random mistake in cell division during early development of the fetus, but not inherited, and there is no scientific research which shows … 展开
Screening before birth
Guidelines recommend screening for Down syndrome to be offered to all pregnant women, … 展开CC-BY-SA 许可证中的维基百科文本 The Accountant 2: What We Can Expect From The Movie Sequel
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