The observable traits of an organism, such as height, eye color, or behavior, which result from the interaction of its genes and environment. It is what you can see or measure, as opposed to the genetic code itself.
From Greek “phainein” (to show) + “typos” (type, form). It literally means “the type that shows.”
Your phenotype is your genes in action, influenced by everything from food to sunlight to stress. Identical twins share the same DNA but can still develop different phenotypes, proving environment is a powerful co-author.
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