diploid

diploid
diploid dip"loid (d[i^]p"loid), a. [Gr. diplo`os twofold + -oid.] (Biol.) having a number of chromosomes corresponding to two copies of each chromosome; having double the basic number of chromosomes, as seen in a haploid cell. Contrasted to {haploid} and {polyploid}.

Note: in diploid cells, although the number of chromosomes is double that in haploid cells, it is not always true that there are two copies of every chromosome, since the two sex chromosomes in males will differ from each other. In females, and for other chromosomes, however, there are generally two copies of each, giving rise to the classical hereditary and sorting patterns of Mendelian genetics. [PJC]


The Collaborative International Dictionary of English. 2000.

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  • diploid — DIPLOÍD, Ă adj. (biol.; despre celule organice sau organisme) Cu număr dublu de cromozomi. ♢ Fază diploidă = perioadă în dezvoltarea unor organisme în care numărul de cromozomi ai celulelor obişnuite este dublu în raport cu acela al celulelor… …   Dicționar Român

  • diploid — [dip′loid΄] adj. [ DIPL(O) + OID] 1. twofold or double 2. Biol. having twice the number of chromosomes normally occurring in a mature germ cell: most somatic cells are diploid n. a diploid cell diploidy [dip′loi′dē] n …   English World dictionary

  • diploid — dip loid (d[i^]p loid), n. [Gr. diplo os twofold + oid.] 1. (Crystallog.) A solid bounded by twenty four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron. [1913 Webster] 2. (Biol.) a cell or organism having a number of… …   The Collaborative International Dictionary of English

  • diploid — diploid. См. диплоид. (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.

  • diploid — 1908, from Gk. diploos double, twofold, (from di two + root *pel to fold; see PLY (Cf. ply) (v.)) + eidos form (see OID (Cf. oid)) …   Etymology dictionary

  • diploid — ► ADJECTIVE Genetics ▪ (of a cell or nucleus) containing two complete sets of chromosomes, one from each parent. Compare with HAPLOID(Cf. ↑haploid). ORIGIN from Greek diplous double …   English terms dictionary

  • Diploid — The number of chromosomes in most cells of the body. This number is 46 in humans. It is naturally twice the haploid number of 23 chromosomes contained in human eggs (ova) and sperm. * * * Denoting the state of a cell containing two haploid sets… …   Medical dictionary

  • diploid — 1. adjective Of a cell, having a pair of each type of chromosome, one of the pair being derived from the ovum and the other from the spermatozoon. Most somatic cells of higher organisms are diploid. 2. noun a) A cell which is diploid. b) …   Wiktionary

  • diploid — I. adjective Etymology: International Scientific Vocabulary Date: 1908 having two haploid sets of homologous chromosomes < diploid somatic cells > • diploidy noun II. noun Date: 1908 a single cell, individual, or generation characterized by the… …   New Collegiate Dictionary

  • Diploid — Unter Diploidie (von griech. diploe = Doppeltheit) wird in der Genetik das Vorhandensein zweier vollständiger Chromosomensätze als sogenannter doppelter Chromosomensatz verstanden. Jedes Chromosom liegt somit in doppelter Zahl vor, wobei bei den… …   Deutsch Wikipedia

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