1. Facultative heterochromatin is the heterochromatin that may become transcriptionally active in specific cell development fates.
兼性异染色质是在特定细胞发育命运中可能具有转录活性的异染色质。
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2. Chromosome material with exhibits of such behaviour is called heterochromatin.
表现这种现象的染色体物质叫做异染色质。
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3. What other functions abundant heterochromatin may perform are still an open question.
至于大量的异染色质还有什么作用仍然是一个问题。
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4. Heterochromatin is dynamically regulated during the cell cycle and in response to developmental signals.
在细胞周期中，异染色质会被进行动态的调节，以响应发育信号。
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5. Objective:To analysis the aberration of chromosome 9 heterochromatin for persons suspected to have chromosome abnormalities.
目的分析疑有染色体异常个体的9号染色体异染色质区的变异。
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6. The origin of such large amounts of constitutive heterochromatin and their role in karyotype evolution and speciation remain a mystery.
如此大量的结构异染色质的来源及其在染色体组型进化和物种形成中的任务仍是一个谜。
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7. It is presumed that the repeated DNA sequences of the heterochromatin near the secondary constriction might be formed gradually in the process of evolution through unequal SCEs.
推测副缢痕附近异染色质的DNA重复序列可能是在进化过程中通过染色单体不均等交换而逐渐形成。
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8. The results suggest that the Y chromosome heterochromatin appears to have a modifying effect on the phenotypic relationship between morphophysiological traits during human ontogenesis.
结果表明，Y染色体异染色质可能在人的个体发育过程中对形态生理学性状间的表型关系起一种修饰作用。
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9. The paper has summarized development of biochemical component and ultrastructure of heterochromatin in eukaryote with an introduction to the development of ultrastructure in centromere.
概述了异染色质生化组成及其在超微结构方面的研究进展，着重介绍了着丝粒的异染色质超微结构研究。
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10. The paper has summarized development of biochemical component and ultrastructure of heterochromatin in eukaryote with an introduction to the development of ultrastructure in centromere.
