#theoretical biology

• Allobiogenesis — A hypothetical or experimental biological process describing the generation or evolution of life from a completely different environment or through mechanisms entirely foreign to standard carbon and nucleic acid-based terrestrial biochemistry. In astrobiology and theoretical biology, the concept investigates the structural parameters of alternative self-replicating systems that could function under extreme planetary temperature and pressure conditions.
• Allocrine — A term describing a gland, tissue, or secretion mechanism in which the produced biochemical substances are released outside the organism or toward another individual of the same or a different species, acting as external chemical messengers (such as pheromones or allomones). In a structural sense, it defines inter-organism exocrine chemical communication processes, opposed to classical endocrine or paracrine systems.