Genetic variation refers to the variation in the DNA sequence within each individual's genome. Genetic variation is what makes each of us unique, whether in terms of hair color, skin tone, or even facial shape.
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Individuals of a species share comparable traits, but they are rarely identical; this variance is known as variety.
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Variation in genes results from minute differences in our DNA.
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SNPs (pronounce'snips') are the most prevalent form of genetic variation among humans.
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Each single nucleotide polymorphism corresponds to a variation in a single DNA base, A, C, G, or T. On average, they occur once per 300 bases and are frequently found between genes in DNA.
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Genes have distinct forms, or alleles, due to genetic variation. People with blue eyes have one allele of the gene responsible for eye colour, while those with brown eyes have a different allele.
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Eye colour, skin tone, and facial structure are all regulated by our genes, thus any variance will be the result of the genes inherited from our parents.
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In contrast, our environment has a significant impact on our weight, despite the fact that genetics have a role. For example, our dietary intake and physical activity frequency.
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Additionally, genetic diversity can explain variances in illness susceptibility and medication response.
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Genetic diversity is crucial to evolution. Evolution is dependent on the transmission of genetic variation from one generation to the next. Favorable traits are "chosen" for, survive, and are transmitted. This process is called natural selection.
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