Phenotype

Definition

The observable characteristics of a patient that result from their genetics and environment, as opposed to their genotype (the actual genetic code).

Example Usage

Two siblings with the same genetic mutation for cystic fibrosis displayed different phenotypes due to environmental factors.

Origin

From Greek 'phaeno' (visible) + 'typos' (type); coined in the early 1900s.

Fun Fact

The same genotype can produce vastly different phenotypes—think identical twins who develop different diseases based on lifestyle choices.

Source: Genetics and Genomics literature

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