Final answer:
Genes are the fundamental units of inheritance passed from parents to offspring and control various traits in an individual's body.
Explanation:
A gene is a locus of DNA that encodes a functional RNA or protein product, determining inherited traits.
Genes are the basic physical unit of inheritance, passed from parents to offspring via chromosomes.
Genes control development and function of all body systems and organs, influencing traits from eye color to liver function.
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