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Nov 23, 2020 · Down Syndrome (Trisomy 21) is one example. This is a genetic condition caused by an extra chromosome and it is the most common chromosomal anomaly in humans. The condition was originally called “Mongolism.” This term dates back to the 1860s, when British doctor John Langdon Down first described the disorder.
- The History and Naming of Down Syndrome
- Depictions of Down Syndrome in Art
- Outdated and Offensive
Down syndrome is a genetic condition caused by an extra chromosome, and it is the most common chromosomal anomaly in humans. The condition was originally called “Mongolism.” This term dates back to the 1860s when British doctor John Langdon Downfirst described the disorder. In 1866, Down published the academic paper, “Observations on an ethnic clas...
During the 1960s, some believed Down syndrome was a relatively new condition. Supporting this “modern theory,” they noted that people with the condition were not portrayed in ancient art. In response, others observed historical paintings that appear to depict Down syndrome subjects and proposed that the condition existed throughout human history. F...
Today, it is perceived as misleading and offensive to use “Mongoloid” to refer to people with this condition, although not everyone is aware of this. In November 2017, nutritionist Libby Weaver issued an apology and recalled 20,000 copies of her book What Am I Supposed To Eat? following complaints of her use of “Mongolism” to refer to Down syndrome...
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Causes. Having a single palmar crease is often normal. However, it may also be associated with various conditions that affect a person's mental and physical growth, including: Down syndrome. Aarskog syndrome. Cohen syndrome. Fetal alcohol syndrome. Trisomy 13. Rubella syndrome. Turner syndrome. Klinefelter syndrome. Pseudohypoparathyroidism.
Mar 8, 2018 · Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. This extra genetic material causes the developmental changes and physical features of Down syndrome. Down syndrome varies in severity among individuals, causing lifelong intellectual disability and developmental delays.
Jan 31, 2023 · Each human cell typically contains 23 pairs of chromosomes, which totals 46. Down syndrome occurs because of changes in the way cells in chromosome 21 divide. Every person with Down syndrome has an extra chromosome 21 in some or all of their cells. There are three types of Down syndrome with different causes, including: Trisomy 21. Translocation.
In 1866 British physician, John Langdon Down, for whom the syndrome is now named, first described Down syndrome, as “Mongolism.” The term Down syndrome didn’t become the accepted term until the early 1970s.
Apr 6, 2021 · According to the Centers for Disease Control and Prevention, approximately one in every 775 babies in the United States is born with Down syndrome, making Down syndrome the most common chromosomal condition. About 5,000 babies with Down syndrome are born in the United States each year. -De Graaf, G., Buckley, F., & Skotko, B. (2024, May 3).
