Examlex
Older married or cohabiting couples get bored with each other and stop having sex.
Direct Fitness
The reproductive success of an individual based on the number of offspring it directly produces and supports to adulthood.
Alarm-Calling
A behavior in which animals emit specific vocalizations to warn conspecifics of potential danger or predators.
Inclusive Fitness
A concept in evolutionary biology that considers an individual's genetic success through its own offspring and by supporting relatives.
Indirect Fitness
The genetic gain achieved by an organism by helping relatives rear their offspring, thereby passing on shared genes.
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