Budding is a form of asexual reproduction. In single-celled organisms, such as budding yeast, it differs from binary fission in that the two resulting cells are not of equal size. Budding is also seen in multicellular organisms, including Hydras and sponges. Virology In virology, budding is a form of viral shedding by which enveloped viruses acquire their external envelope from the host cell membrane, which bulges outwards and encloses the virion. Embryology In embryology, the term budding is a… (More on Budding)