Meisosis 1- splits diploid into 2 haploid
Meisosis 2- splits 2 diploid into 4 haploid
Prophase 1- Chromosomes condense, spindle forms and attached to spindle poles. Nuclear envelope breaks up
Homologous chromosomes condense, pair up, and swap segments. Spindle microtubules attach to them as the nuclear envelope breaks up.
Metaphase 1- Chromosomes align midway through spindle poles
Homologous chromosome pairs are aligned between spindle poles. Spindle microtubules attach the two chromosomes of each pair to opposite spindle poles.
Anaphase 1- sister chromatids separate and move towards opposite spindle poles
All of the homologous chromosomes separate and begin heading toward the spindle poles.
Telophase 1- chromosome clusters arrive at the spindle poles, new nuclear envelopes form, the Chromosomes loosen up
A complete set of chromo- somes clusters at both ends of the cell. A nuclear envelope forms around each set, so two haploid nuclei form.
Prophase 2- Chromosomes condense, spindle forms and attaches to spindle poles, nuclear envelope breaks up
The chromosomes condense. Spindle microtubules attach to each sister chromatid as the nuclear envelope breaks up.
Metaphase 2- Chromosomes align midway through the spindle poles
The (still duplicated) chromosomes are aligned midway between spindle poles.
Anaphase 2- Sister Chromatids separate, and move towards opposite poles
Sister chromatids separate. The now unduplicated chromosomes head to the spindle poles.
Telophase 2- Chromosome clusters arrive at spindle poles, new nuclear envelopes form, Chromosomes loosen up
A complete set of chromosomes clus- ters at both ends of the cell. A new nuclear envelope forms around each set, so four haploid (n) nuclei form.