(2)次缢痕(secondary constriction):染色体上除主缢痕以外的其它浅缢缩的部分,它的数目、位置和大小是某些染色体固定的形态特征,因此可作为鉴别染色体的标志。
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在染色体上也可看到其他的收缩凹陷处,称为次级缢痕(secondary constriction)。有些染色体的一端还可有球形小体,称随体(satellite),多见于近端着丝粒染色体。
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... 主缢痕 primary constriction 副缢痕 secondary constriction 核仁组织区 nucleolar organizing region, NOR ...
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... [=planck's constant]普朗克(氏)量子常数 [=secondary constriction]次溢痕(染色体) [=t h e fraun h ofer line]弗伦豪佛(氏)谱线,太阳光谱线 ...
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以上来源于: WordNet
The secondary constriction has been observed on the centromere region of the chromosome No.
染色体短臂近着丝粒区观察到次缢痕。
This report describes a female ease who is complete deletion of secondary constriction on two chromosomes 9. The major clinical phenomenon is severe mental retardation.
本文报道了一例两条9号染色体次缢痕缺失的女性病例,临床表现为严重智力低下和语言障碍。
There were 17 cases of chromosome polymorphism, accounting for 9.83% of all abnormal karyotypes. It contains Y chromosome, secondary constriction, and variation of satellites.
染色体多态性17例,占异常核型的9.83%,主要包括Y染色体多态性、次缢痕和随体的变异。
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