Asexual reproduction is a form of reproduction that requires only one parent, with no exchange of genetic material and fertilization. A number of organisms use this method to perpetuate themselves. Some species are capable of both asexual and sexual reproduction, alternating methods depending on environmental factors. Most organisms that reproduce asexually are single celled, with the exception of plants.
Binary fission is a form of asexual reproduction which is used by all prokaryotic organisms, and some eukaryotic organisms like fungi as well. In addition to being used to duplicate whole organisms, binary fission is also utilized within the cells of eukaryotic organisms by some of the organelles. In this process, two daughter cells are produced by a single parent cell which effectively clones itself. In binary fission, the cell starts by duplicating its DNA to create two complete sets, and then growing to a size much larger than it usually is. As the cell grows, the sets of DNA move to opposite ends of the cell. Once the cell has achieved the right size, it splits in two, creating two daughter cells with identical DNA. Binary fission is frequently used when an organism is living in a stable environment.
Budding is a horticultural practice that involves the insertion of a scion onto the stock. A "scion" is a detached bud of a plant, while a "stock" is the stem of the parent plant. Budding is also one of the methods of artificial vegetative propagation that is done to grow new plants by asexual means. It is comparable to another method of vegetative reproduction called grafting, although grafting involves the insertion of branches instead of buds. Plant budding, as well as grafting, is used to produce a new plant that has the most desirable characteristics of the two parent plants. Budding is done by first selecting and detaching a...
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