Meiosis stages

Prophase 1

Spindle fibers form

Chromosomes condense and thicken

Nuclear envelope breaks down

They line up with their homologous pair (same size and gene located same loci)

Swapping over occurs where the homologous pair chromosomes swap sections of specific DNA with each other (alleles)

There are currently 46 chromosomes with 92 chromatid pairs making it up

Metaphase 1

Homologous pairs of chromosomes line up in the middle of the cell. Independent assortment occurs here, the chances of the mother chromosome facing a pole and the father chromosome facing another are completely random and independent of each other, so when they get pulled away, the probability of a certain chromosome being located on a certain side is random.

Anaphase 1

Homologous pairs are pulled away from each other; kinetochores are on the centromeres, the spindle fibers attach to the kinetochores and the fibers shorten as the chromosomes are moved to opposite sides of the cell

Telophase 1

Two newly formed nuclei surrounding the chromosomes.

Cytokinesis occurs afterwards, splitting the cytoplasm and now there are 2 cells.

Each cell contains 23 chromosomes with 46 chromatid pairs.

Prophase 2

Nuclear envelope breaks down, spindle fibers form, chromosomes condense again. (on both cells this is occuring)

Metaphase 2

The chromosomes line up in the middle of the cell in a single file line. (on both cells this is occuring)

Anaphase 2

The sister chromatids that make up one chromosome are pulled to opposite sides of the cell (on both cells this is occuring)

Telophase 2

The 2 nuclei reform and cytokinesis follows to split the cytoplasm in half. (on both cells this is occuring)
Now we are left with 23 chromosomes and 23 chromatids