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常染色体

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Here we describe 55.8 million base pairs of highly accurate finished sequence representing 99.9% of the euchromatin portion of the chromosome.

作者描述了5.58千万碱基序列,涵盖了该染色体常染色质99.9%的精确序列。

Each of these bundles is called a nucleosome, and many nucleosomes are bound together by the continuing strand of DNA, which forms a string of beads that further coils to form one of two kinds of chromatin, either euchromatin or heterochromatin.

所有细胞核的最显著的特点就是染色体,由DNA和组蛋白所组成的染色质构成,DNA绕行在由4个相似的组蛋白分子结合而形成的柱状的芯上,这一结构称为核小体,核小体之间由连续的DNA链连接,形成串珠样结构,进一步盘曲形成常染色质或异染色质。

Histone H3 methylated at Lys4, which defines euchromatin, was not only distributed across most of the chromosomal landscape but was also present at the centromere core, the site of kinetochore assembly.

标志着常染色质的组蛋白H3-K4甲基化不仅广泛分布在大部分的染色体区域,同时也存在于着丝点的中心位置。

There are two subspecies of migratory locusts in China.

在这两个亚种的许多个体中常有超数染色体存在。

Down syndrome is the most common cause of autosomal abnormality and mental retardation.

唐氏症是最常发生的体染色体异常,也是最常见的原因。

The protocol is summarized in Figure 18.16. A radioactive probe representing a gene (most often a labeled cDNA clone derived from the mRNA) is hybridized with thedenatured DNA of the polytene chromosomes in situ. Autoradiography identifies the position or positions of the corresponding genes by the superimposition of grains at a particular band or bands.

如图26.15所示为此过程草图:一个放射性探针代表一个基因(常是一个从mRNA中克隆得到的cDNA),它与原位多线染色体的变性DNA杂交,放射自显影仪可通过叠印特定纹带的纹理来识别应答基因的位置。

The protocol is summarized in Figure 18.16. A radioactive probe representing a gene (most often a labeled cDNA clone derived from the mRNA) is hybridized withthe denatured DNA of the polytene chromosomes in situ. Autoradiography identifies the position or positions of the corresponding genes by the superimposition of grains at a particular band or bands.

如图26.15所示为此过程草图:一个放射性探针代表一个基因(常是一个从mRNA中克隆得到的cDNA),它与原位多线染色体的变性DNA杂交,放射自显影仪可通过叠印特定纹带的纹理来识别应答基因的位置。

A small, typically round, granular body composed of protein and RNA in the nucleus of a cell, usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.

核仁小而常为圆形的颗粒体,由蛋白质和细胞核中的核糖核酸构成,通常与一特定染色体缔合有直接关系并涉及核糖体核糖核酸的合成和核糖体的形成

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

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