During cell division, sometimes there will be failure of separation of sister chromatids. This event is called

interference

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complementation

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non-disjunction

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coincidence

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Solution

The correct option is C non-disjunction
Non-disjunction occurs when a pair of homologous chromosomes do not separate in meiosis but migrate to the same pole of the cell, resulting in an even number of chromosomes being present in the daughter cells.

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