How do natural disasters contribute to genetic drift?

Genetic drift is a random change in allele frequencies that occurs in a small population.  Because there are so few parents in small populations, the frequencies in the offspring produced may differ from allele frequencies in the parents. This can result in certain genes disappearing as individuals die, or do not reproduce. Natural disasters can wipe out certain individuals (or whole parts) of a population. When this happens, genetic drift is the result. 

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it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells