Science says Intercourse Exists to Avoid Diseases


If you try to look at sexual intercourse at an evolutionary perspective, it is a waste of time and energy. Yet sex has become the most presiding way to the world to ensure the survival of the species, passing on genes to the next generations. So what exactly is the advantage of having intercourse?


According to an article published by Marlowe Hood for Agence France-Presse, sexual reproduction causes genetic variation, which is needed for the offspring to have a genetic makeup that will make it survive in an ever-changing environment.




To show that genetic changes that come with sexual reproduction enhance an organism’s ability to fight off diseases, Auld and two colleagues conducted an experiment using the humble water flea, which can actually reproduce both ways.


After comparing clonal and sexual daughters from the same mothers, the scientists discovered that sexually produced offsprings get less sick.




The findings of their study published in the British journal Proceedings of the Royal Society B. showed that cloning offers fewer opportunities for genetic changes in the organism. Meanwhile, sexual reproduction fuels new genetic variations that can help organisms fight back against pathogens.

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