The phenotype refers to the observable characteristics or traits of an organism. These traits result from the interaction of its genetic makeup (genotype) with the environment. These characteristics can include physical features, such as height, eye color, and hair texture, as well as physiological traits, behavior, and disease susceptibility. The phenotype is the product of gene expression, where the genes within an organism's genome are expressed and interact with each other and the environment to produce a specific phenotype.
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