🧬ap biology review

Phenotype

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Phenotype refers to an individual's observable physical properties such as appearance, development and behavior—the outcomes influenced by its genotype interacting with the environment.