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Trisomy 21. Down syndrome (also known by the karyotype 47,XX,+21 for females and 47,XY,+21 for males) [98] is mostly caused by a failure of the 21st chromosome to separate during egg or sperm development, known as nondisjunction. [91] As a result, a sperm or egg cell is produced with an extra copy of chromosome 21; this cell thus has 24 ...
John Langdon Down. John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician best known for his description of the genetic condition now known as Down syndrome, which he originally classified in 1862. He is also noted for his work in social medicine and as a pioneer in the care of mentally disabled patients.
The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...
Patau syndrome. Patau syndrome is a syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13. The extra genetic material disrupts normal development, causing multiple and complex organ defects. This can occur either because each cell contains a full extra copy ...
Updated September 15, 2024 at 11:35 AM. Hispanic Heritage Month, or “Mes de la Herencia Hispana” in Spanish, honors the history, culture, food, music and accomplishments of the Hispanic ...
World Down Syndrome Day (WDSD) is marked each year on March 21, [1] beginning in 2007. The 21st day of March (the 3rd month of the year) was selected to signify the uniqueness of the triplication (trisomy) of the 21st chromosome which causes Down syndrome. The General Assembly of the United Nations has decided to observe it each year since 2012 ...
The 20th Century Studios release earned an estimated $41.5 million in its first weekend, where it was playing in 3,885 locations in the U.S. and Canada. Including $66.7 million from international ...
Amistad is a 1997 American historical drama film directed by Steven Spielberg, based on the events in 1839 aboard the Spanish slave ship La Amistad, during which Mende tribesmen abducted for the slave trade managed to gain control of their captors' ship off the coast of Cuba, and the international legal battle that followed their capture by the Washington, a U.S. revenue cutter.