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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 ...
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 ...
Jérôme Jean Louis Marie Lejeune (13 June 1926 – 3 April 1994) was a French pediatrician and geneticist, best known for his work on the link of diseases to chromosome abnormalities, most especially the link between Down Syndrome and trisomy-21 and cri du chat syndrome, amongst several others, and for his subsequent strong opposition to the improper and immoral use of amniocentesis prenatal ...
Contents. Mapuche. The Mapuche (/ məˈpuːtʃi / mə-POO-chee, [ 3 ]Mapuche and Spanish: [maˈputʃe]) are a group of indigenous inhabitants of south-central Chile and southwestern Argentina, including parts of Patagonia. The collective term refers to a wide-ranging ethnicity composed of various groups who share a common social, religious, and ...
Replica of a Diaguita ceramic bowl from northern Chile. Ricardo E. Latcham's theory posits Mapuches intruded from the east into the southern Diaguita lands.. A hypothesis put forward by Ricardo E. Latcham, and later expanded by Francisco Antonio Encina, theorizes that the Mapuche migrated to present-day Chile from the Pampas east of the Andes. [1]
Machi (shaman) A machi is a traditional healer and religious leader in the Mapuche culture of Chile and Argentina. Machis play significant roles in Mapuche religion. In contemporary Mapuche culture, women are more commonly machis than men, but it is not a rule. Male machi are known as Machi Weye.
NEWARK, Del. − A motorcyclist who police said fled a traffic stop Tuesday night is accused of hitting and killing a University of Delaware freshman and injuring four others.
The Mapuche conflict (Spanish: conflicto mapuche) involves indigenous Mapuche communities, also known as the Araucanians, [ 1 ] located in Araucanía (Spanish name given to the historic region that the Mapuche inhabited in Chile) and nearby regions of Chile and Argentina. It is often referred to as a conflict between the Mapuche and the Chilean ...