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Down syndrome (United States) or Down's syndrome (United Kingdom and other English-speaking nations), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3]
Deletion on a chromosome. In genetics, a deletion (also called gene deletion, deficiency, or deletion mutation) (sign: Δ) is a mutation (a genetic aberration) in which a part of a chromosome or a sequence of DNA is left out during DNA replication.
Cat eye syndrome (Schmid Fraccaro syndrome) [6] is a condition caused by a partial trisomy or tetrasomy in chromosome 22. A small extra chromosome is found, made up of the top half of chromosome 22 and a portion of the q arm at the q11.2 break.
Ralph Waldo Emerson's essay called for staunch individualism. "Self-Reliance" is an 1841 essay written by American transcendentalist philosopher Ralph Waldo Emerson.It contains the most thorough statement of one of his recurrent themes: the need for each person to avoid conformity and false consistency, and follow his or her own instincts and ideas.
Trisomy 13 was first observed by Thomas Bartholin in 1657, [11] [12] but the chromosomal nature of the disease was ascertained by Dr. Klaus Patau and Dr. Eeva Therman in 1960. [13] The disease is named in Patau's honor. In England and Wales during 2008–09, there were 172 diagnoses of Patau syndrome (trisomy 13), with 91% of diagnoses made ...
The process that results in emergence of an ethnicity is called ethnogenesis, a term in use in ethnological literature since about 1950. The term may also be used with the connotation of something unique and unusually exotic (cf. "an ethnic restaurant", etc.), generally related to cultures of more recent immigrants, who arrived after the ...
Complete trisomy 8 causes severe abnormalities on the developing fetus and can be a cause of miscarriage. [2] [3] Complete trisomy 8 is usually a gestational lethal condition, whereas trisomy 8 mosaicism is less severe and individuals with a low proportion of affected cells may exhibit a comparatively mild range of physical abnormalities and developmental delay. [4]
The rule of three can refer to a collection of three words, phrases, sentences, lines, paragraphs/stanzas, chapters/sections of writing and even whole books. [2] [4] The three elements together are known as a triad. [5] The technique is used not just in prose, but also in poetry, oral storytelling, films, and advertising.