2011 m. balandžio 6 d., trečiadienis

Cloning


To begin with, the idea of cloning animals was first suggested in 1938 by German embryologist Hans Spemann. So since then everything began and has been developing until now.

Firstly, I would like to talk little about the first mammal which has been successfully cloned from an adult cell. It was sheep named Dolly. She was cloned in Scotland. Although she seems healthy enough, she lived only six years – from 1996 until 2003. Dolly died from progressive lung disease and now her remains are at Edinburgh’s Royal Museum.

What about human cloning? Today science is not so far advanced that it could be possible for scientists to clone a human. I suppose that it is not necessary to do it because there is too much risk. Cloning is not natural process and we don’t know how it can affect a cloned human’s organism.

Of course, there are a lot of myths about it. There are some reports about cloned human but it is not truth because it hasn’t scientific proof. Moreover, some people think that clone is a copy of a real person, but it is not true. Clones aren’t exact copies. A human clone would be as similar as the genetic identical twin. A clone would have its own personality, character, intelligence and talents. It is impossible to clone a person’s brain or mind.

In my opinion, cloning is useful only for medical purposes when particular organs are cloned and transplant into human’s body. In this case, a lot of lives could be saved and people wouldn’t die from so many diseases. In addition, cloned organs would be genetically identical to a particular person so there is high probability that these organs would be accepted.

All in all, there are a lot of unanswered questions about cloning and I suppose that it would be good if people used cloning for medical purposes. On the other hand, it is not natural and we don’t know how it can affect a human.

References:
http://en.wikipedia.org/wiki/Cloning
http://www.bionetonline.org/english/content/sc_cont5.htm
http://www.ornl.gov/sci/techresources/Human_Genome/elsi/cloning.shtml

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