人体X染色体的显微扫描照片。 （得到照片研究中心允许而复制） X染色体是Y染色体的三倍大，而且也传递着比其多100倍的基因信息。
The X chromosome is three times the size of the Y chromosome and carries 100 times the genetic information.
每个染色体小组均由三条同源染色体组成。
Each homologous chromosome group has three homologous chromosomes.
这会改变其染色体的数目，使每个细胞产生三对染色体，而通常每个细胞只有两对染色体。
This alters their plement of chromosomes, giving them three sets per cell instead of the usual two.
除了正常染色体对以外，还存在有第二种同源染色体的非整倍体状态，被称为三体性。
An aneuploid state in which a third homologous chromosome is present in addition to the normal autosomal pair is called trisomy.
控制茸毛色的基因（t）可以定位在新三体的超数染色体上。
The gene controlling pubescence color(t)could be located on the extrachromosome of the new trisomic.
以外周血淋巴细胞制备染色体标本，人工复合三倍体鲤染色体数为150，其亲本红鲤、红鲫和散鳞镜鲤的二倍体染色体数均为100。
Chromosome preparations made from leucocyte cultures showed that the artificial multiple triploid carp has a chromosomal number of 150, and all the fore parental forms have 100.
表明三个特殊类型材料的1 ~ 3条染色体含有黑麦染色体易位片段。
The results indicated that 1-3 chromosomes of the derivatives have the translocated fragments from the chromosome recombination between wheat and rye.
研究进一步证明人工复合三倍体鲤与二倍体亲本的染色体倍性和相对dna含量存在着明显的相关性。
Therefore, we have proved that there is a close correlation between the artificial multiple triploid carp and its diploid parents in both chromosomal Numbers and relative DNA contents.
结果：经太空诱变后的生物工程细胞染色体畸变率为：环状占10.5%，无着丝断片占36.75%，三射、四射体占13%。
Result: The abnormal chromosome rate of bio-engineering cells muted by outer space were: ring chromosome, 10.5%; acenericfragment, 36.75%; triceneric and fourcentric, 13%.
目的探讨8号染色体三体（8三体）对急性粒单、单核细胞白血病（M4、M5）细胞生物学及临床特征的影响。
Object:To evaluate the prognostic impact of trisomy 8 on cytobiological and clinical features in acute myelomonocytic and monocytic leukemia (M4, M5).
而对于多倍体生物，如体细胞中每条染色体具有三个或三个以上的拷贝，二体或双体就是一种非整倍体状况。
For organisms that normally have three or more copies of each chromosome (those that are triploid or above), disomy is an aneuploid chromosome complement.
在3号，6号染色体双三体上共有6个杂交位点。
In the double trisomic 3, 6, six hybridization sites were detected.
目前研究发现此病有三种遗传方式：即母源第7号染色体单亲双体、常染色体显性遗传及常染色体隐性遗传。
At present, three modes of inheritance are identified including maternal uniparental disomy for chromosome 7 and autosomal dominant or autosomal recessive inheritance.
结果128例胎儿核型中，9例为18三体综合征，2例为其它染色体异常，染色体异常发现率为8·59%（11/128）。
Results Nine cases of trisomy 18 and 2 cases of other abnormal karyotype were found among the 128 pregnant women (8.59%, 11/128).
唐氏综合症（21三体综合症）是由于患者额外多了一条21号染色体所致的疾病。
Down syndrome (trisomy 21) is a disorder caused by the presence of an extra 21st chromosome.
唐氏综合症（21三体综合症）是由于患者额外多了一条21号染色体所致的疾病。
Down syndrome (trisomy 21) is a disorder caused by the presence of an extra 21st chromosome.
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