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male can greatly increase his sexual success by mating far more frequently than the female. Sperm, unlike egg cells, are also mobile, allowing for the sperm to swim towards the egg through the female's sexual organs. Sperm competition is also a major factor in the development of sperm cells. Only one sperm can fertilize an egg, and since females can potentially mate with more than one male before fertilization occurs, producing sperm cells that are faster, more abundant, and more viable than that produced

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