In, 1898 the Russian cytologist S. G. Navashin discovered double fertilization in angiosperms, which consists in the union of a sperm-ucleus with an egg cell nucleus and the union of a second sperm nucleus with the nucleus of an endosperm-producing cell.
Bioculture is the combination of biological and cultural factors that affect human behavior. Bioculture is an area of study bounded by the medical sciences, social sciences, landscape ecology, cultural anthropology, biotechnology, disability studies, the humanities, and the economic and global environment.
Southern regional. aquaculture center. Biosecurity in aquaculture consists of practices that. minimize the risk of introducing an infectious disease and. spreading it to the animals at a facility and the risk that. diseased animals or infectious agents will leave a facility. and spread to other sites and to other susceptible species.