diakinesis

diakinesis

1. All plants overwhelmingly produced PMCs with normal chromosome pairing (20 bivalents) at diakinesis and 20:20 segregations at anaphase I (AI) or anaphase II(AII).

减数分裂时期，大部分终变期细胞的染色体组成为20个二价体(20II)，表明所有的染色体能完成正常的同源染色体配对；

2. Prophase may be divided into successive stages termed leptotene, zygotene, pachytene, diplotene, and diakinesis.

前期可被分为连续的阶段：细线期、偶线期、粗线期、双线期和终变期。

3. 1.During diakinesis the sister chromatids of homologous pairs of chromosomes complete their separation, and the chromosomes coil tightly, shortening and thickening.

在终变期配对的同源染色体中的姐妹染色单体完成分离，染色体变成紧密凝集的状态，缩至最小长度。

4. Chiasmata are seen during this stage, and by the end of diakinesis the nucleoli and nuclear membrane have disappeared.

在这个时期可以看见交叉，在终变期末细胞核中的核仁，核膜消失。

5. From pachytene to diakinesis of meiosis, there is nucleolus attached to three nucleolo-chromosomes in the nucleus. The three bivalents are named the second, fifth and twenty-second ones respectively.

大多数有一个核仁,少数有两个或三个核仁.在减数分裂粗线期至终变期的细胞核内,有一个核仁和三条贴附在核仁上的核仁染色体,这三条核仁染色体分别是第2号、第5号和第22号.

6. Petunia cultivar Menghuan was used to observe the meiosis of pollen mother cell and formation of male gametophyte.The results showed that: seven rod or ring bivalents could be observed in diakinesis.

摘要以矮牵牛品种梦幻为材料，对花粉母细胞减数分裂和雄配子形成进行细胞学观察，结果表明：终变期有7个二价体，有棒状和环状构型。

7. The nucleus in shrinking cytoplasm of microspore mother cell enters into diakinesis stage.16.

收缩的小孢子母细胞中核进入减数分裂终变期。

8. The characteristic of leptotene, zygotene, pachytene, diploene and diakinesis was observed.The meiosis of Periplaneta Brunnea is similar to other Periplanetas.

细胞分裂过程中细线期、偶线期、粗线期、双线期、终变期染色体形态学特征,结果表明褐斑大蠊减数分裂过程与蜚蠊属其他种相似,符合一般规律。

9. diakinesis stage

终变期

10. Diakinesis The last stage of the PROPHASE in the first division of MEIOSIS.

终变期：减数分裂第一次分裂前期中的最后一个阶段。