Prophase 1 – each chromosome appears as two condensed homologous chromatids. This is when crossing over occurs.
Metaphase 1 – the chromosomes line up on the metaphase plate and the spindle forms.
Anaphase 1 - one pair of chromatids from each homologous pair moves to each end of the cell.
Telophase – the nuclear membrane re forms and the cells begin to divide.
Metaphase 2 – new spindles are formed and the chromosomes (still made up of pairs of chromatids) line up on the metaphase plate.
Anaphase 2 – the centromeres now divide and the chromatids move to opposite ends of the cell.
Telophase 2 – nuclear envelopes reform, the chromosomes return to their interphase state and cytokinesis occurs giving 4 daughter cells each with half the chromosome number of the original diploid cell.
Metaphase 1 – the chromosomes line up on the metaphase plate and the spindle forms.
Anaphase 1 - one pair of chromatids from each homologous pair moves to each end of the cell.
Telophase – the nuclear membrane re forms and the cells begin to divide.
Metaphase 2 – new spindles are formed and the chromosomes (still made up of pairs of chromatids) line up on the metaphase plate.
Anaphase 2 – the centromeres now divide and the chromatids move to opposite ends of the cell.
Telophase 2 – nuclear envelopes reform, the chromosomes return to their interphase state and cytokinesis occurs giving 4 daughter cells each with half the chromosome number of the original diploid cell.