Why do scientists clone?
Some scientists would like to clone endangered species to protect them from extinction. In order to practice the techniques, scientists have so far cloned non-endangered animals, namely, tadpoles, mice and even horses. It took thousands of attempts for these experiments to be a success.
Cloning cells for untreatable diseases
One day, scientists hope that cloned cells will be used to treat serious diseases such as heart problems, diabetes and spinal injuries. Scientists hope to remove stem cells from a five day old cloned embryo and grow specific cell lines from them which may treat disease.
By cloning a person’s own body cells, scientists hope that a cloned stem cell line will not be rejected by the patient receiving the cells. The genetic material will be identical to their own. Cloned cells may one day be used to treat a damaged heart or neurons.
Testing new medicines
Scientists test new medicines on cells taken from the embryos before trying the medicines on animals and real people.