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Title : Sex Protects against parasites
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Sex Protects against parasites

Sexual reproduction enables the body to create new combinations of genes to be one step ahead parasites. The study of sexual habits of worms, scientists found that species with asexual reproduction were exposed to bacterial infections which destroyed them. US researchers who studied the sex lives of worms, found that sexual reproduction makes organisms more resistant to parasites.

The idea that sexual reproduction can provide protection against pathogens is not new. This theory has its roots in a set of ideas known as the Red Queen hypothesis.

Scientists believe they have found the most convincing evidence to date of a fundamental theory in evolutionary biology that sex evolved because it allows body to create new combinations of genes for stay one step ahead of parasites. Asexual reproduction, biological process by which an organism creates a genetically identical copy of itself without the combination of genetic material with another individual has much greater significance.

is much easier, since there is no need to find and seduce a mate, fight with rivals and there is no risk of contracting sexually transmitted diseases. The fact that some organisms live long enough to be able to play because they have genes is first class.

Why then would have risked to "dilute" these good genes with potentially weaker genetic material?

The multicellular organisms can not mutate themselves into a base for infection, so rely on other mechanisms to fight mutant insects quickly. The genetic variation that we, as a species, we obtain sexual reproduction is particularly important for the ability of our immune system to fight pathogens. In fact, the more variable set of genes in the human genome encode proteins that determine what type of pathogen an individual is the best in the fight.

This variation provides our species generalized protection of pathogenic agents in general, even if a person is particularly susceptible to some viral infection, for example, the probability of all being susceptible to this virus it becomes extremely low by our extraordinary genetic diversity. This diversity is produced by sexual selection, which allows humans to acquire new features with each generation.

However, it is not sex. Most animals and plants reproduce that way. Experts now believe that parasites are the reason for having sex. Unlike the disadvantages of sex, create conditions in which "mixed" because of genetic material recently obtained offspring with new genetic combinations are potentially superior to the elders to control parasites is desirable.

There is no guarantee that newly acquired traits will be useful, and many of them may be neutral, such as eye color, or harmful, such as genetic diseases. Over evolutionary time, however, sexual reproduction is hypothesized to provide organizations an edge in the arms race with pathogens. Thus, besides allowing you to make babies and enjoy yourself at the same time, sex can also play an important role in protecting species from extinction.

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