Allele
One of the different forms of a gene that can exist at a single locus (spot on a chromosome). Also one of the different forms of any segment of a chromosome.
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Any one of a series of two or more different genes that may occupy the same locus on a specific chromosome. As autosomal chromosomes are paired, each autosomal gene is represented twice in normal somatic cells. If the same a. occupies both units of the locus, the individual or cell is homozygous for this a.. If the alleles are different, the individual or cell is heterozygous for both alleles. See DNA markers. SEE ALSO: dominance of traits. SYN: allelomorph. [G. allelon, reciprocally]
- silent a. SYN: amorph.

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al·lele ə-'lē(ə)l n
1) any of the alternative forms of a gene that may occur at a given locus
2) either of a pair of alternative Mendelian characters (as ability versus inability to taste the chemical phenylthiocarbamide)
al·le·lic -'lē-lik, -'lel-ik adj
al·lel·ism -'lē(ə)l-.iz-əm, -'lel-.iz- n

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n.
one of two or more alternative forms of a gene, only one of which can be present in a chromosome. Two alleles of a particular gene occupy the same relative positions on a pair of homologous chromosomes. If the two alleles are the same, the individual is homozygous for the gene; if they are different he is heterozygous. See also dominant, recessive.
allelic adj.

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al·lele (ə-lēlґ) [Gr. allēlōn of one another, from allos other] one of the two or more alternative forms of a gene that can occur at a particular chromosomal locus and that determine alternative characters in inheritance. In diploid species, there are two alleles, identical or differing, for each specific locus of an autosomal chromosome, one on each chromosome of a homologous pair. allelic adj

Medical dictionary. 2011.

Look at other dictionaries:

  • Allele — Allèle On appelle allèles les différentes versions d un même gène. Chaque allèle se différencie par une ou plusieurs différences de la séquence de nucléotides. Ces différences apparaissent par mutation au cours de l histoire de l espèce, ou par… …   Wikipédia en Français

  • Alléle — Allèle On appelle allèles les différentes versions d un même gène. Chaque allèle se différencie par une ou plusieurs différences de la séquence de nucléotides. Ces différences apparaissent par mutation au cours de l histoire de l espèce, ou par… …   Wikipédia en Français

  • allèle — [ alɛl ] n. m. • 1936; abrév. de allélomorphe ♦ L un quelconque des deux gènes différant par leur expression phénotypique bien que leur fonction soit la même, localisés au même site sur chaque membre d une paire de chromosomes homologues (SYN.… …   Encyclopédie Universelle

  • Allele —   [zu griechisch alle̅lōn »gegenseitig«], Singular Allel, das, s, Genetik: durch Mutation veränderbare Zustände eines Gens. Allele sind identische Abschnitte homologer Chromosomen und können eine unterschiedliche Ausprägung des zugehörigen… …   Universal-Lexikon

  • allele — al*lele n. 1. 1 1. one of two or more alternative forms of a gene that can have the same place on homologous chromosomes and are responsible for alternative traits. Syn: allelomorph [WordNet 1.5] 2. either of a pair of Mendelian characters that… …   The Collaborative International Dictionary of English

  • Allele — Allgemeine Informationen Genre(s) Alternative Metal Gründung 2002 Website www.alle …   Deutsch Wikipedia

  • allele — allele. См. аллеломорф. (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.

  • allele — allele. См. доминантный ген. (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.

  • allele — (n.) 1931, from Ger. allel, abbreviation of allelomorph (1902), coined from Gk. allel one another (from allos other; see ALIAS (Cf. alias)) + morphe form (see MORPHEUS (Cf. Morpheus)) …   Etymology dictionary

  • allele — [ə lēl′] n. [Ger allel < Gr allēlōn, of one another] either of a pair of genes located at the same position on both members of a pair of chromosomes and conveying characters that are inherited in accordance with Mendelian law allelic [ə lēl′ik …   English World dictionary

  • Allele — This article is about the forms of a gene. For a non technical introduction to the topic, see Introduction to genetics. For the alternative metal band, see Allele (band). An allele (UK  /ˈæ …   Wikipedia

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