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( Budding)
Budding (also called burgeoning) is the formation of a new organism by the protrusion of part of another organism. This is very common in plants[citation needed] and fungi, but may be found in some animals as well, such as the Hydra. Usually, the protrusion stays attached to the primary organism for a while, before becoming free. The new organism is naturally genetically identical to the primary one (a clone). When yeast buds, one cell becomes two cells. When a sponge buds, a part of the parent sponge falls off and starts to grow into a new sponge. These are examples of asexual reproduction. This method helps the virus leave the cell without lysing the cell, thereby allowing the cellular machinery to produce more viruses. The term budding is also applied to the process of embryo differentiation in which old structures are formed in outgrowth from preexisting parts. Budding is a process that consist of engrafting the bud of a plant into another plant, see Shield budding.
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