Exon

Exon
This interesting surname is of Anglo-Saxon origin, and is a locational name from any of various places called Exton, for example in Devonshire, Somerset, Hampshire and Rutland. The former two derive their first element from the river "Exe", on which they are situated, so named from the Old British (extinct Celtic language of the ancient Britons) "esce" or "easc", water, and the Olde English pre 7th Century "tun", a farm or settlement; hence, "settlement on the river Exe". Exton in Hampshire, recorded as "aet East Seaxhatune" in the Anglo-Saxon Chronicles (940), and as "Essessentun" in the Domesday Book of 1086, translates as "the tun (settlement) of the East Saxons". Finally, Exton in Rutland, recorded in the Domesday Book as "Exentune", derives from the Olde English "exna", the plural of "oxa", ox, and "tun" (as before); hence, "ox-farm". Nicholas de Extone is recorded in Wiltshire in 1292. In the modern idiom the name can be found as Exton and Exon. Recordings of the surname from English Church Registers include: the marriage of Simon Exon and Elizabeth Langley on October 27th 1606, at Isle Brewers, Somerset, and the marriage of John Exon and Jane Davis on September 5th 1626, at Stoke Gabriel, Devonshire. The first recorded spelling of the family name is shown to be that of Alexander de Exton, which was dated 1273, in the "Hundred Rolls of Devonshire", during the reign of King Edward 1, known as "The Hammer of the Scots", 1272 - 1307. Surnames became necessary when governments introduced personal taxation. In England this was known as Poll Tax. Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.

Surnames reference. 2013.

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  • Exón — Saltar a navegación, búsqueda Explicación gráfica de intrón y exón Los exones son las regiones de un gen que no son separadas durante el proceos de splicing y, por tanto, se mantienen en el ARN mensajero maduro. En los genes que codifican una… …   Wikipedia Español

  • exon — [ ɛgzɔ̃ ] n. m. • 1979; de ex(primé) et (cod)on ♦ Biochim. Séquence d un gène codant pour une protéine. « beaucoup de gènes semblent présenter, à côté de séquences actives qualifiées d exons, des séquences muettes : les introns » (J. Ruffié). ●… …   Encyclopédie Universelle

  • Exon — Ex on, n. [NL., from E. Exe (Celt. uisge water) the name of a river.] A native or inhabitant of Exeter, in England. [1913 Webster] …   The Collaborative International Dictionary of English

  • Exon — Ex on, n. [F. expect an under officer.] An officer of the Yeomen of the Guard; an Exempt. [Eng.] [1913 Webster] …   The Collaborative International Dictionary of English

  • exon — exon. См. экзон. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • exon — (en genética molecular) parte de la molécula de ADN que produce el código para el ARN mensajero final. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • Exon — Exon, informativer (codierender) Abschnitt in einem eukaryotischen Gen. Nach der Transkription werden beim Processing die nichtcodierenden Bereiche eines Gens, die ⇒ Introns, herausgeschnitten und die E. miteinander verbunden, sodass die fertige… …   Deutsch wörterbuch der biologie

  • Exon — Exon* das; s, Plur. s od. ...onen Kunstw.; Analogiebildung zu ↑Codon> codierender Bereich eines Gens (Genetik); Ggs. ↑Intron …   Das große Fremdwörterbuch

  • exon —  Exon  Экзон   У эукариот участок гена, в котором закодирована информация для синтеза соответствующего продукта гена (белка). Экзоны чередуются с некодирующими фрагментами гена интронами. Экзоны, в отличие от интронов, полностью представлены в… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • exon — [ek′sän] n. a sequence in the genetic code that supplies the information for protein formation …   English World dictionary

  • Exon — An exon is a nucleic acid sequence that is represented in the mature form of an RNA molecule after a) portions of a precursor RNA, introns, have been removed by cis splicing or b) two or more precursor RNA molecules have been ligated by trans… …   Wikipedia

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