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DNA Testing – What Makes Us Human


What makes us human? DNA testing is a way to read the code of our human make-up. Ever since the discovery of the structure of DNA was discovered in the 1950s, scientists have made it theirs life’ work to decode the secrets of human nature. DNA testing can now tell us where we originate from, who our ancestors were and how likely our behaviour will be, even how we might die. DNA testing is truly the ultimate fingerprint – totally unique and full of information about what makes us tick.

DNA Testing – The Secret of Humans

By unravelling the secrets of DNA scientist can now transfer genes between species for example creating pigs with human genes and crops that can make their own pesticides. The impact on the future of the human race comes straight from the pages of a science fiction novel. Organs can be grown specifically for transplants. Medical science can tailor-make and test drugs, and the recent cloning of sheep raises the question – will humans be next on the list?  DNA testing means that more criminals and terrorists our now DNA fingerprinted.

DNA Testing and Ethics

DNA testing can raise some emotional and difficult ethical questions. The idea of improving life, treating illnesses and even cloning opens a whole new world for the future of humanity, but with it comes difficult ethical questions. The idea of being able top manipulate genetics through DNA testing and to create a perfect human isn’t really what humanity as we currently know it is all about. Our differences and imperfections are the things that make us mere mortals, human.

The DNA of ET

DNA testing can tell us a great deal about who we are. Scientists are now predicting what alien life forms may be like by using DNA. Humans, plants and earth-bound species share a common DNA structure – a double helix bound together by four chemicals which are known as bases. Scientists have constructed models to show us how organisms cannot evolve if there are more or fewer bases. The specific DNA code found that is found on earth gives exact instructions for creating and maintaining life. It is made-up of four letters – but the scientists have pondered over what may happen if it was made of more letters. ET, Spielberg’s most famous extra terrestrial on earth was said to have had a six-base DNA.

DNA Testing – The Secret Of Life

Some scientists do believe that DNA as we know it has developed with evolution. They predicted that when earth began and before DNA existed, the environment was an ‘RNA World’. RNA is not as stable as DNA and is less sophisticated, unable to hold information or to build complex organisms like humans. DNA testing and RNA  theories could hold the secret as to how life began on earth, and how we evolved to become human beings.

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