isobilateral

1.The tetrad was shaped in a tetrahedral or isobilateral pattern.

中期Ⅱ相互平行纺锤体发生合；

2.Cytokinesis at meiosis of microspore mother cells is modified simultaneous, and tetrads are decussate or isobilateral, occasionally linear.

四分体排列方式为交叉型或左右称型,偶为直线型；

3.Ubisch bodies and lipid bodies are found in the glandular tapetums. In meiosis of microsporocyte, cytokinesisis is a simultaneous type, which produces an isobilateral tetrad.

小孢子母细胞减数分裂胞质分裂为同时型,产生正四面体型四分体。