Prophase I is the longest phase of meiosis, typically consuming 90% of the time for two divisions.

The chromatin condenses into discreet chromosomes in prophase I of meiosis.

Assemblage of synaptonemal complex takes place in leptotene phase. The synaptonemal complex is a protein structure that forms between homologous chromosomes (two pairs of sister chromatids) during meiosis and is thought to mediate chromosome pairing, synapsis and recombination.

Bivalent chromosomes are formed at pachytene stage.

Some transcription of DNA takes place at diplotene phase.

Nucleolus disappears at diakinesis stage.

Chiasmata formation is crossing over of non-sister chromatids which may cause recombination and ultimately lead to genetic variation.

Independent assortment of chromosomes takes place in metaphase I. The physical basis of the independent assortment of chromosomes is the random orientation of each bivalent along the metaphase plate, with respect to the orientation of the other bivalents along the same equatorial line.

The cell elongates in anaphase I for preparation of division, down the center.

Cells are haploid in prophase II.

The chromosomes uncoil back to chromatids in telophase.

The cleavage of centromeric cohesin to segregate sister chromatids takes place at anaphase II.

At diakinesis, the sites of crossing over entangle together, effectively overlap and make chiasmata clearly visible.

Other than chiasmata and tetrads being visible , the rest of the diakinesis stage closely resembles prometaphase of mitosis; the nucleoli disappear, the nuclear membrane disintegrates into vesicles and the meiotic spindle begins to form.

Polar molecules interact with microtubules from opposite centromere.