Biology / Bio 3369 · Atom · ~20 seconds
Determination and Differentiation
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Determination commits a cell irreversibly to a fate before any visible change; differentiation is the later process where that committed cell actually specializes in structure and function.
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A committed muscle precursor is already determined before it visibly develops striations and contractile fibers.
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Determination locks in fate before differentiation shows it outwardly — a determined cell can look identical to undetermined neighbors.