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The Latin word variatio arrived at Spanish as variation . This is the name of act and result of varying : change, alter.

The concept has multiple uses according to the context. In the field of genetics , the variation refers to changes that are registered in the genes of a species or a population.

The genetic variation is linked to the evolution . The alternative forms presented by genes located in the same position on homologous chromosomes are known as alleles , whose expression defines various features. If there are many alleles for a gene, one can impose on others and thus produce natural selection . Therefore, genetic variation contributes to Evolutionary process .

In the field of music , on the other hand, the variation refers to a altered repetition within the framework of a composition . It is a technique that leads to reiterate, with alterations, a rhythm, a melody or other element throughout the work.

The main theme, thus, is imitated in subtopics. Those imitations They are known as variations.

For the mathematics , the variations are subsets which have the same number of elements as the set in question, although with differences in the order or in a certain element.

The idea of ​​variation is also used in the colloquial language to name a modification that allows to make a thing different from what it was or what it usually is, transforming its characteristics, its form, etc. It is also a change recorded in something.

Suppose a person usually make an apple pie with raisins (raisins). One afternoon, however, he decides to use prunes . This means that you introduced a variation in the usual recipe .

Take the case of Gross domestic product (GDP ) from a country. The GDP variation or GDP In the last decade, for example, it shows how the data changed over ten years.

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