Diakinesis is the last stage of prophase during meiosis. Diplonema is the doubled form of the chromosome strand during the diplotene stage of meiosis.

Yes, the nucleus dissipates during late prophase and early metaphase in mitosis, and during Prophase 1/diakinesis of meiosis.

It is prophase because it is where chiasmata is formed and crossing over between non sister chromatids of homologous chromosomes happen. it is further divided into 1.diplotene
2.zygotene
3.pachytene
4.leptotene and
5.diakinesis stages

At the beginning of telophase I, each half of the cell has a complete haploid set of chromosomes, but each chromosome is still composed of two sister chromatids. Cytokinesis usually occurs simultaneously with telophase I, forming two haploid daughter cells. No chromosome replication occurs between the end of meiosis I and the beginning of meiosis II, as the chromosomes are already replicated.

In telophase II, the nuclei form and the chromosomes begin decondensing. The meiotic division of one parent cell produces four daughter cells, each with a haploid set of (unreplicated) chromosomes.

there are actually four stages or phases in meiosis: prophase, metaphase, anaphase and telophase. Within prophase there is the leptotene stage where individual chromosomes condense into strands within the nucleus, the zygotene stage where the chromosomes line up with each other into homologous chromosomes, the pachytene stage where the nonsister chromatids exchange genetic information over regions of homology, the diplotene stage where the chromosomes start to separate and uncoil a little to allow some transcription of DNA, and the diakinesis stage where the chromosomes condense further and the meiotic spindle begins to form.