meiosis


meiosis
The two-stage process in sexual reproduction by which the chromosome number is reduced from the somatic to the haploid number. The first division, in which homologous chromosomes pair and exchange genetic material, is followed by amitotic division. The nucleus divides twice, but the chromosomes only once, generating haploid nuclei, which develop into the gametes (egg and sperm in animals; egg and s in plants).

Glossary of Biotechnology for Food and Agriculture . 2015.

Look at other dictionaries:

  • Meiosis — es una de las formas de la reproducción celular. Este proceso se realiza en las glandulas sexuales para la produccion de gametos. Es un proceso de división celular en el cual una célula diploide (2n) experimenta dos divisiones sucesivas, con la… …   Wikipedia Español

  • meiosis — f. citol. División celular propia de las células germinales durante el proceso de maduración que transformará la ovogonia en ovocito y la espermatogonia en espermatocito. Se trata de una división reduccional, es decir, una división celular en la… …   Diccionario médico

  • meiosis — division of a cell nucleus, 1905, from Gk. meiosis a lessening, from meioun to lessen, from meion less, from PIE root *mei small (see MINUS (Cf. minus)). Earlier (1580s) it was a rhetorical term, a figure of speech weak or negative expression… …   Etymology dictionary

  • meiosis — pronounced miy oh sis, is a figure of speech involving an emphatic understatement made for effect, as when something outstanding is described as ‘rather good’. A literary example occurs in Shakespeare s Romeo and Juliet, where Mercutio refers to… …   Modern English usage

  • meiosis — o meyosis sustantivo femenino 1. Área: biología Proceso de división celular por el cual, a partir de una célula madre, se originan cuatro células hijas o gametos y se reduce el número de cromosomas a la mitad: La meiosis está presente en el… …   Diccionario Salamanca de la Lengua Española

  • meiosis — [mī ō′sis] n. [ModL < Gr meiōsis < meioun, to make smaller < meiōn, less: see MINOR] 1. the process of two consecutive nuclear divisions in the formation of germ cells in animals and of spores in most plants, by which the number of… …   English World dictionary

  • Meiosis — Mei*o sis (m[ i]*[=o] s[i^]s), n. [NL., fr. Gr. mei wsis, fr. meioy^n to make smaller, from mei wn. See {Meionite}.] 1. (Rhet.) Diminution; a species of hyperbole, representing a thing as being less than it really is; understatement; see also… …   The Collaborative International Dictionary of English

  • meiosis — meiosis. См. деление созревания. (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.

  • Meiōsis — (gr.), 1) krankhafte Verkleinerung eines Theils; 2) so v.w. Myosis; 3) rhetorische Figur, die, scheinbar verkleinernd, vergrößert; z.B. Abraham war nicht schwach (d.i. sehr stark) im Glauben …   Pierer's Universal-Lexikon

  • Meiosis — Meiosis, griech. = Verminderung, rhetorische Figur, wobei man sich eines scheinbar verringernden Ausdrucks bedient, um den Gegenstand schärfer hervorzuheben …   Herders Conversations-Lexikon

  • meiosis — (Del gr. μείωσις, disminución). f. Biol. Sucesión de dos divisiones celulares durante la formación de los gametos, de la que resultan cuatro células que tienen un cromosoma de cada pareja de la célula original …   Diccionario de la lengua española


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