Biologists dealing with problems of evolution have repeatedly tried to answer the question, why did nature in the course of evolution need to work out such a thing as sex? Scientists believe that sex is one of the main mysteries of nature.

From the scientific point of view, there are not so many reasons why living organisms - including humans - do this.

At the same time, the reasons for not having sex, there are many, reports BBC with reference to the results of the study published in the journal Science. Studies have consistently confirmed that sex is a very inefficient procedure for reproducing themselves. As you know, on average, those organisms that do not have sex to deal with, the offspring is twice as large as that of loving species. In addition, sex is also dangerous from the point of view of the spread of infections.

However, a huge number of species of living organisms have sex and do not suffer from it, successfully developing and competing with all other. According to a new theory created by American biologists from the University of Indiana, sex is needed to accelerate evolution - in order to accelerate the formation of new gene combinations. Thus, it is possible to "deceive" pathogenic organisms. "According to the new theory, parasites tend to exist at the expense of the most widespread genotype," said Professor Kurt Lively of the University of Indiana. But, according to this theory, it is still unclear why animals need to have sex as often as it actually happens. The mathematical theory created at the University proves that if the "arms race" with parasites is to blame for everything, then to justify the abundance of sex in the living world, parasites should just everywhere sizzle, but in reality there are not so many of them.

So, apparently, scientists will have to look for another theory of sex medicus. En.

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