What is cloning and why is it useful??

in simple words

It is the creation of a being through use of cellular material from a single other person. Some plants and animals use cloning as a method for reproduction, as opposed to sex. It is also possible to clone animals in the lab which do not normally use cloning; about 10 years ago the cloning of Dolly the sheep was big news. Cloning of a human may just about be possible, but there are self-imposed moratoria on doing it, because of ethical concerns.

The key point about a clone is that it is identical to the donor genomically. That is not to say they are the same animals; the genome does not determine everything in anyone's life.

Cloned mice are the basis of much animal testing in the lab. They react to diseases and treatments pretty much identically, making the perfect control specimens. Many commercial agricultural plants are clones.

Cloning means the formation of a new tissue, organ or a whole being from a single parent. It is useful for medical experiments. For example: a drug is to be tested & we have taken 10 guinea pigs for testing the drug, the response to the drug by different pigs would be different because of their genetic & physiological changes. Hence, cloned guinea pigs can solve the problem as they don't have any variation. Similarly, in the production of some antibodies, the cloned animals are used so that there is no batch to batch variation.

It's the duplication of animals or people. It is useful for scientific ..experiements and to contain desired traits. It is also useful for "spare parts."

I can see one medical benefit of cloning: regeneration of lost bodyparts.

Simply say---Duplication