Examlex
Which of the following is not part of the adaptive immune system?
Pheromones
Chemical substances produced and released into the environment by an animal, affecting the behavior or physiology of others of its species.
Chemical Attractants
Substances that cause organisms to move toward them due to a chemical gradient, often used in cell signaling and navigation.
Haplodiploidy
A sex determination system in some insects where males develop from unfertilized eggs and are haploid, while females develop from fertilized eggs and are diploid.
Altruistic Behavior
Actions by an individual that benefit others at its own expense, often observed in the social behavior of animals.
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