Asexual reproduction - it is a reproduction of organisms in which there is no participation of other individuals, and reproduction of their own kind occurs by separating one or a few cells from the mother's body.This process involved only the parent individual.The resulting mitotic cells fully comply with the original parent.
Asexual reproduction is extremely simple.This is due to the fact that the organization structure of the single-celled organisms is also relatively simple.Organisms with this method of reproduction reproduce themselves very quickly.In favorable conditions, each time the number of such cells is doubled.This process can continue indefinitely, until there will be a random change in the genetic code, called a mutation.
reproduction in nature is found in plants, and single-celled animals.
Asexual reproduction of organisms
simple division is seen in single-celled plants and animals, such as ciliates, amoebae and some algae.First, the core of the cell divides through mitosis in half, and then formed hauling and parent specimen is divided into two parts, which are subsidiaries of organisms.
asexual reproduction in animals survived only in some forms: sponges, cnidarians, flatworms, tunicates.In these organisms, the new specimen obtained by budding or fission, and then separate from the body of the parent, to the whole being completed.In some cases the ability to grow in the individual organism in animals have body parts.The whole hydra, for example, can develop out of two hundred pieces.When asexual reproduction newly created individuals come from one or more cells through mitotic divisions, got the same genetic information, which has the cell of the parent body.
Asexual plant reproduction
widely distributed this way of reproduction in the plant kingdom.There are a number of plants that are well propagated by tubers, layering, cuttings, and even leaves that can be used to grow new organisms vegetative parts of the parent plant.This type of asexual reproduction is called vegetative, and it is inherent in a highly organized plants.An example of such a multiplication can assume that occurs whiskers, for example, strawberry.
Spore formation - asexual reproduction, which occurs in many plants, such as algae, ferns, mosses, fungi, at some stage of development.In this case, the mechanism of reproduction are involved special cells, often covered with thick shell that protects them from the adverse effects of the environment: heat, cold, dry.As soon as there are favorable conditions, spores shell bursts, the cell begins to divide repeatedly, giving life to a new body.
way of reproduction called budding, when the parent of the individual separates a small portion of the body from which later formed a subsidiary body.
set of individuals who are descended from a common ancestor with the help of this type of reproduction in biology are called clones.
Asexual reproduction is widely used in agriculture to produce plants with a set of features that are useful for human life.Long "whiskers", shoots spread strawberries, fruit trees and bushes - cuttings.Scientists investigating the mechanisms of reproduction, to learn how to monitor and manage their development.Cell cultures desired genetic information is propagated first and then grow out of them need the whole plant.
