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What are genetic variants?

Genetic variants or polymorphisms indicate a change on a certain location of the DNA, where two or more different alleles can be present. Two unrelated individuals can differ in about one hundred thousand to one million genetic variations, but most of these differences do not have a significant effect on physiology and nutritional needs.
When we talk about genetic variants, we usually use the term genotype – which simply refers to the exact state of the certain genetic variant. For instance, we say that someone’s genotype is GG or AA. The genotype is part of the genetic makeup which, together with the environment, forms the uniqueness of each one of us.

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