X (in genetics)

Although the letter X can be used as a symbol in various ways (such as with X-rays, the X-axis of a graph, etc.), "the X " in genetics and medicine today usually refers to the X chromosome. The X is the sex chromosome that is found twice in chromosomally normal females and singly along with a Y chromosome in chromosomally normal males. The complete chromosome complement consisting of 46 chromosomes including the two sex chromosomes is thus conventionally written as 46,XX for chromosomally normal females and 46,XY for chromosomally normal males.

Medical dictionary. 2011.

Look at other dictionaries:

  • genetics — genetics. См. генетика. (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.

  • genetics of sex — genetics of sex. См. генетика пола. (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.

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  • Genetics and the Origin of Species — (en español, «Genética y el origen de las especies») es una obra escrita por el genetista soviético estadounidense Theodosius Dobzhansky en 1937.[1] [2] De acuerdo a la gran mayoría de los historiadores de la Biología, los conceptos básicos de la …   Wikipedia Español

  • Genetics and the Origin of Species — (ISBN 0 231 05475 0) is a 1937 book by the Ukrainian American evolutionary biologist Theodosius Dobzhansky and one of the important books of the modern evolutionary synthesis. A third edition was published in 1951.Sixty years after its… …   Wikipedia

  • Genetics — biohacker biopharming bioprivacy blooding bug cheapdate contraceptive corn crazy tobacco …   New words

  • genetics — 1872, laws of origination; see GENETIC (Cf. genetic) + ICS (Cf. ics). A coinage of English biologist William Bateson (1861 1926). Meaning study of heredity is from 1891 …   Etymology dictionary

  • genetics —  Genetics  Генетика   Наука о наследственной передаче и изменчивости признаков у живых организмов …   Толковый англо-русский словарь по нанотехнологии. - М.

  • genetics — ► PLURAL NOUN 1) (treated as sing. ) the study of heredity and the variation of inherited characteristics. 2) (treated as sing. or pl. ) the genetic properties or features of an organism. DERIVATIVES geneticist noun …   English terms dictionary

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