Metaphase I to interkinesis

Metaphase I: the bivalents line up on the equatorial plate. Microtubules from opposite spindle poles attach to the kinetochores of the homologous chromosomes.

Anaphase I: the homologous chromosomes separate and move to opposite poles, while the sister chromatids stay joined at their centromeres.

So each pole gets half as many chromosomes as the parent cell had, and every one of those chromosomes still has two chromatids.

Telophase I: a nuclear membrane and a nucleolus form again, and cytokinesis follows to give a dyad of cells.

In many cases the chromosomes spread out a little in telophase I, but they never reach the fully extended state of an interphase nucleus.

Interkinesis is the stage between the two meiotic divisions. It is generally short, and there is no DNA replication in it.

Interkinesis is followed by prophase II, which is much simpler than prophase I.