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The obsolete medical terms Mongolian idiocy and Mongolism referred to a specific type of mental deficiency, associated with the genetic disorder now known as Down syndrome. The obsolete term for a person with this syndrome was called a Mongolian idiot. In the 21st century, these terms are no longer used as medical terminology, deemed an ...
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 ...
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 ...
Mongoloid (/ ˈmɒŋɡəˌlɔɪd /) [ 1 ] is an obsolete racial grouping of various peoples indigenous to large parts of Asia, the Americas, and some regions in Europe and Oceania. The term is derived from a now-disproven theory of biological race. [ 2 ] In the past, other terms such as " Mongolian race", "yellow", "Asiatic" and " Oriental ...
The book, characteristic of the consequently discredited ideas of scientific racism prevalent at the time, explored and presented the idea that "Mongolian imbecility" (a form of intellectual disability now called Down's syndrome and known to be caused by the replication (trisomy) of the chromosome 21) was an atavistic throwback to, and/or the ...
Specialty. Medical genetics. In humans, a single transverse palmar crease is a single crease that extends across the palm of the hand, formed by the fusion of the two palmar creases. Although it is found more frequently in persons with several abnormal medical conditions, it is not predictive of any of these conditions since it is also found in ...
Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin. The blue colour is caused by melanocytes, melanin -containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. [ 6 ]
Kathryn McGee. Kathryn "Kay" McGee (née Greene, May 6, 1920, in Chicago, Illinois – February 16, 2012 in River Forest, Illinois) was an American activist, recognized for founding two of the first organizations for the benefit of those with Down Syndrome. [1] She worked seeking recognition, rights and opportunities for people with Down Syndrome.