tetrad
tetrad
英['tetræd]美[ˈtɛtˌræd]
n.四元组,四分染色体,<化>四价元素,(数目)4;
例句
Microspore abortion occurred after the tetrad formation.小孢子败育发生在四分体形成以后.
The chalazal megaspore of a linear tetrad develops into a polygonum type sac.四分体线行排列,合点端的大孢子发育为蓼型胚囊.
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.
Cytokinesis was simultaneous and the arrangement of microspores in the tetrad was tetrahedral.胞质分裂为同时型,四分体中小孢子排列呈正四面体形.
At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.此时每条染色体由一对染色单体构成,这两条联合的染色体称为四分体.
英汉词典释义
n.
(数目)4
四元组,四个一组
四分染色体
At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.此时每条染色体由一对染色单体构成,这两条联合的染色体称为四分体。<化>四价元素
英英词典释义
Noun
1. the cardinal number that is the sum of three and one
行业词典
医学: 四联体:四个类似或有关事物的组合,如四价元素(或基团);四分体:染色体在第一成熟分裂前期的粗线期形成的4分组合;四裂体:某些球菌向两个层面分裂形成的细胞方形物(八叠球菌);
植物学: 四分体;四合花粉;
生物学: 四分体;
药学: 四分体;
遗传学: 四联体;减数分裂I中,二价体具有四条染色体单体。;四分体;性母细胞减数分裂所产生的四个子细胞。;