Genes are the fundamental units of heredity, acting as the instructions for the synthesis of proteins that perform a multitude of functions within living organisms. Each gene is a segment of DNA located on chromosomes, carrying the code that dictates specific traits or functions. For instance, the gene for eye color contains the blueprint for the production of pigments that give our eyes their distinctive hues, such as blue, brown, or green. A lleles, on the other hand, are different versions of the same gene that arise due to variations in the DNA sequence at a particular locus on a chromosome. These variations lead to the diversity of traits observed within a species. A single gene for hair color, for example, may have multiple alleles corresponding to black, brown, blonde, or red hair. Similarly, the gene determining blood type possesses alleles A, B, and O, each contributing to the blood type of an individual. The expression of these alleles can be either dominant o
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