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- chromosome tetrad 四价染色体, 染色体四分子
- The position that a given gene occupies on a chromosome. 基因座在一条染色体上某种给定基因所占的位置
- The main types of variation included univalent, chromosome lagging, chromosome fragment, chromosome bridge, micronucleus, abnormal ditrad a nd tetrad. 染色体异常类型主要有单价体、染色体落后、染色体断片、染色体桥、微核及二分体、四分体异常等。
- The micronuclei were not observed in tetrad stage . 四分体阶段有微核。
- The other cells of the tetrad undergo degeneration. 胚囊发育类型为单孢子蓼型胚囊;
- A chromosome composed primarily of heterochromatin. 异染色体主要由异染色质组成的染色体
- Chromosome 5 is distinguished by a proximal knob. 第5染色体的特点是有一个近侧的节结。
- Several copies of specific chromosome are present. 特殊染色体存在着几个拷贝。
- Genome A complete haploid chromosome set. 基因组：即一套完整的单倍体染色体。
- An organism having a euploid chromosome number. 整倍体具有整倍体染色体数的有机组织体
- With the increase of chromosome ploidy. 并且。随着染色体倍性提高。
- Toreplace a chromosome by proportional selection. 基因的选择算子。
- Chromosome studies on two species of Trifolium L. 两种车轴草的染色体研究。
- A chromosome that is not a sex chromosome. 常染色体非性染色体的一个常染色体
- The microspores in tetrad stage showed tetrahedron structure. 小孢子四分体为四面体型。
- THE CHROMOSOME NUMBERS OF 13 SPECIES IN SMILAX L. 菝葜属13个种的染色体数目
- Which undergoes meitotic division and forms a linear tetrad. 由孢原细胞直接发育形成大孢子母细胞。
- Male have XY chromosome. Female have XX chromosome. 雄性动物细胞有一对XY染色体，雌性动物细胞有一对XX染色体。
- Abnormal development was observed at tetrad and mature embryo sac. 在四分体和成熟胚囊时期观察到了异常发育现象。
- The higher frequency in the gains of chromosome No. 结果表明,鼻咽癌染色体畸变具有类型广泛、畸变率高等特点。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
