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a giant chromosome with hundreds of paired loops extending laterally from the main axis, giving it a fuzzy, brushlike appearance at low magnification; most easily seen in primary oocytes of amphibians and used to study transcription.Medical dictionary. 2011.
lampbrush chromosome — lampbrush chromosome. См. хромосомы типа ламповых щеток. (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.
Lampbrush chromosome — A Lampbrush chromosome (first seen by Flemming in 1882) is a large chromosome (largest) found especially in the oocytes (immature eggs) of most animals, except mammals. Lampbrush chromosomes occur during the diplotene stage of meiosis I.… … Wikipedia
lampbrush chromosome — ˈ ̷ ̷ˌ ̷ ̷ noun Etymology: translation of German lampenbürstenchromosom : a greatly enlarged pachytene chromosome having apparently filamentous granular loops extending from the chromomeres that is especially characteristic of certain animal… … Useful english dictionary
lampbrush chromosome — noun Date: 1911 a greatly enlarged diplotene chromosome that has apparently filamentous granular loops extending from the chromomeres and is characteristic of some animal oocytes … New Collegiate Dictionary
lampbrush chromosome — Large diplotene chromosomes present in oocyte nuclei, and particularly conspicuous in amphibians. These chromosomes have extended regions called loops, which are active sites of transcription. See: diplonema … Glossary of Biotechnology
Chromosome — For a non technical introduction to the topic, see Introduction to genetics. Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2)… … Wikipedia
Chromosome — A visible carrier of the genetic information. The 3 billion bp (base pairs) in the human genome are organized into 24 distinct, physically separate microscopic units called chromosomes. All genes are arranged linearly along the chromosomes. The… … Medical dictionary
Polytene chromosome — Polytene chromosomes in a Chironomus salivary gland cell … Wikipedia
giant chromosome — 1. polytene c. 2. lampbrush c … Medical dictionary
Cromosoma — Vista general de las células en un ápice de raíz de cebolla (Allium cepa), observado con 800 aumentos. (a) Célula sin dividirse, obsérvese la red de cromatina … Wikipedia Español
