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Understanding Alleles Are: The Core Genetic Variants That Shape Biological Diversity

"Alleles are alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. They dictate distinct heritable traits—such as eye color, blood type, and susceptibility to certain genetic disorders—by determining how proteins are synthesized within living organisms. The Molecular Foundation of Alleles in Genetics At the center of classical and molecular genetics lies the gene, a specific sequence of nucleotides encoded in DNA that provides instructions for building proteins. However, genes are not monolithic blocks of identical code across a population. Variations within these DNA sequences give rise to alleles..."

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