Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Mechanical isolation refers to a type of reproductive barrier in which the genitalia of two species are incompatible, preventing successful mating.
Related terms
Temporal isolation: Temporal isolation is when two species reproduce at different times, such as one species reproducing in spring and another in fall.
Behavioral isolation occurs when there are differences in courtship rituals or behaviors between two species that prevent them from mating successfully.
Gametic isolation: Gametic isolation happens when the sperm from one species cannot fertilize the eggs of another species due to chemical or molecular differences.