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🔮 Cryptic Female Choice

Females can bias paternity AFTER mating through physiological mechanisms: selective sperm storage, ejaculate ejection, differential fertilization. This hidden choice drives male trait evolution.

How much females bias paternity
Optimal male trait value
Generation: 0
Mean Male Trait: 0.50
Mean Bias (Preferred/All): 1.00
Preferred Paternity: 50%
Selection Differential: 0.00
Eberhard's CFC: In Drosophila, females can eject sperm from suboptimal males faster when better males are detected (via pheromones). CFC may be more important than premating choice in many species.