tetrad的例句（tetrad在句子中的用法）

• 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.