Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Selective pressure is an environmental factor that causes certain traits to be more or less advantageous, leading to changes in the frequency of those traits over generations.
This is the process by which species evolve over time as individuals with traits beneficial for their environment are more likely to survive and reproduce.