File:Кариотип крысовидного хомячка T.triton.tif
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Русский: Кариотип (хромосомный набор) самки крысовидного хомячка Tscherskia triton de Winton, 1899 (световая микроскопия при х100 увеличении). Хромосомы окрашены методом C-banding для выявления конститутивного (структурного) гетерохроматина. Диплоидное число хромосом 2n=28. Кариотип T. triton содержит 26 аутосом (22 крупных и 4 мелких) и 2 половые Х-хромосомы. Тёмные участки хромосом – гетерохроматин – хроматин (комплекс ДНК, белков и РНК) в состоянии компактизации, имеющий особые свойства и функции. На крупных хромосомах блоки гетерохроматина имеют два сегмента (стрелки 1 и 2). Мелкие хромосомы содержат гетерохроматин в центромерных районах (с). Х-хромосомы содержат слабовыраженный гетерохроматин в коротком плече (p) и менее ½ длинного плеча (q), а также прицентромерный гетерохроматин (с). В нижней части фотографии находиться интерфазное ядро другой клетки. Bar = 5 µm. English: The karyotype (chromosome set) of female Tscherskia triton de Winton, 1899 – Greater Long-tailed hamster (light microscopy with x100 magnification). The chromosomes were stained by C-banding for identify of structural heterochromatin. The diploid chromosome number is 2n=28. The karyotype of T. triton contains 26 autosomes (22 large and 4 small) and two sex X-chromosomes. The heterochromatin is darker areas of the chromosomes, it is compacted chromatin (the complex of DNA, proteins and RNA), which has special properties and functions. The heterochromatic blocks have two segments (arrows 1 and 2) on large chromosomes. The small chromosomes contain heterochromatin in the centromeric areas (c). The X-chromosomes have weak heterochromatin in the short arm (p) and less than ½ of the long arm (q), and the pericentromeric heterochromatin (c). The interphase nucleus of another cell is shown in the photo underside. Bar = 5 µm. English: Karyotype of T.triton |
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| Source | Own work |
| Author | Greyscan |
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| current | 08:31, 28 November 2015 |  | 1,285 × 1,521 (1.63 MB) | Greyscan (talk | contribs) | User created page with UploadWizard |
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