Con+-+Reporductive+Cloning

media type="youtube" key="_kB7XCV-D08" width="425" height="350" align="right" __**Points against Animal Cloning**__ In a large percentage of cases, the cloning process fails in the course of pregnancy or some sort of birth defects occur, for example, as in a recent case, a calf born with two faces. Sometimes the defects manifest themselves later and kill the clone (Buzz.com,2009).

Cloning technology isn't perfect, something biotech companies are the first to admit. The most common early defect is a condition known as large-offspring syndrome. Those clones are born larger than normal, leading to difficult births for the mother cows. Also, the calves have trouble breathing in their first few weeks (Gogoi,2007). 

There is a risk of disease transfer between transgenic animals and the animal from which the transgenes were derived. If an animal producing drugs in its milk becomes infected by a virus, the animal may transmit the virus to a patient using the drug (Kayvon Fatahalian,1998).





If a large percentage of a nation's cattle are identical clones, a **virus**, such as a particular strain of mad cow disease, could affect the entire population. The result could be catastrophic food shortages in that nation (Kayvon Fatahalian,1998).

Cloning may cause people to settle for the best existing animals, not allowing for improvement of the species. In this way, cloning could potentially interfere with natural evolution (Kayvon Fatahalian,1998).