unequal crossing-over

unequal crossing-over
Crossing-over between homologous chromosomes that are not precisely paired, resulting in non-reciprocal exchange of material and chromosomes of unequal length. Favoured in regions containing tandemly repeated sequences.

Dictionary of molecular biology. 2004.

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  • unequal crossing-over — unequal crossing over. См. неравный кроссинговер. (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.

  • unequal crossing-over — nelygusis krosingoveris statusas T sritis augalininkystė apibrėžtis Krosingoveris, kurio metu homologinės chromatidės keičiasi nelygiais segmentais. atitikmenys: angl. unequal crossing over rus. неравный кроссинговер ryšiai: sinonimas – nelygusis …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • unequal crossing over — Abnormal meiotic event, in which one chromatid contains a duplication and the other a deletion. Often arises in a region containing repeated DNA sequences, which can pair out of register …   Glossary of Biotechnology

  • crossing-over, crossover — Reciprocal exchange of material between two paired chromosomes during meiosis, resulting in the transfer of a block of genes from each chromosome to its homologue. In contrast to genetic recombination (2), which is a phenotypic phenomenon, c. is …   Medical dictionary

  • неравный кроссинговер — unequal crossing over неравный кроссинговер. Кроссинговер, в результате которого образуются сестринские кроссоверные хроматиды, различающиеся по количеству заключенного в них генетического материала; в основе Н.к. лежит неправильное спаривание… …   Молекулярная биология и генетика. Толковый словарь.

  • Alfred Sturtevant — Infobox Scientist name = Alfred Henry Sturtevant image width = caption = birth date = birth date|1891|11|21|mf=y birth place = death date = death date and age|1970|4|5|1891|11|21|mf=y death place = residence = citizenship = nationality = USA… …   Wikipedia

  • Chromosomal crossover — Thomas Hunt Morgan s illustration of crossing over (1916) A double cros …   Wikipedia

  • Gene duplication — Schematic of a region of a chromosome before and after a duplication event Gene duplication (or chromosomal duplication or gene amplification) is any duplication of a region of DNA that contains a gene; it may occur as an error in homologous… …   Wikipedia

  • Hemoglobin — The oxygen carrying pigment and predominant protein in the red blood cells. Hemoglobin forms an unstable, reversible bond with oxygen. In its oxygenated state it is called oxyhemoglobin and is bright red. In the reduced state it is called… …   Medical dictionary

  • Duplication — Part of a chromosome in duplicate, a particular kind of mutation (change) involving the production of one or more copies of any piece of DNA, including a gene or even an entire chromosome. Duplications typically arise from an event termed unequal …   Medical dictionary

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