I'd like to show you this word clouds I made by using "wordle". This is from a site, "Sience Daily", which is written about souces for the latest research news.   This article says cloning is not by chance but is done by human intentionally. And "cloning", "identical", "organism", are written in big words, so I can guess this site is about "cloning" .

"Sience Daily". 2012. Web. 14 June 2012.

 http://www.sciencedaily.com/articles/c/cloning.htm