What events occurring in meiosis provide a halving of the set of chromosomes in daughter cells?

In anaphase 1, homologous chromosomes (and not sister chromatids, as in mitosis) depart from each other and are stretched by the fission spindle threads to the opposite poles of the cell. Therefore, from each pair of homologous chromosomes, only one will enter the daughter cell. Thus, at the end of anaphase I, the set of chromosomes and chromatids at each pole of the dividing cell is 1n2c – it has already halved.

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