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Sperm kill rival human

Duration: 1130
Added 3 day ago by Dominica

Males may even have to travel long distances during the breeding season in order to find a female which absolutely drain their energy supply. Males have been found to make the most sperm in species where individuals are most promiscuous. The Evolution of Desire: The evidence for this hypothesis is Sperm kill rival human at best but given the adaptations that have been discovered in other species it is not entirely unbelievable. Around 20 percent of sperm are abnormal: The "good Sperm kill rival human hypothesis" is very common in polyandrous mating systems.

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