tetrad造句
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.
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.
Microspore abortion occurred after the
tetrad formation.
小孢子败育发生在四分体形成以后.
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.
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.