( synthesising vitamins that people canno...)Humans, A Symbiotic Organisms Dependent On Other Life Forms For Existence,Health

synthesising vitamins that people cannot do so themselves.

Gill said that not only have humans evolved for millions of years but that they also provide them with essential functions. Gill and his team sequenced the DNA in faeces that were donated by three adults and found that a surprising amount of it came from bacteria’s. They compared these gene sequences to known bacteria’s and to the human genome and they found that almost the entire amount of genetic material from the microbes in the lower gut had more than 60.000 different species. And that, it was explained was twice as many as those found in human genome. Gill further stated that among all he DNA sequences found in the material only 1-5% was not bacterial.

The scientists were also surprised that there were an astonishing amount of certain one-celled organisms that were genetically distinct from bacteria’s called Archaea, or archaebacteria also found. These were often found in extreme environments such as hot springs. It was also explained that all the donors were healthy individuals ho had not taken any antibiotics for over a year, as the drugs could disturb the bacteria in the body.

Gill stated that he and his team hope now to make a comparison of the gut bacteria from different people. He explained that ideal study would be to compare 20-30 people from different ethnic backgrounds, having different diet, drink and smoking habits. That he felt would give them distinct differences. He further stated that the Bacteria’s would definitely help in breaking down drugs that people take and thereby studying the effects of different populations of the microbes might provide clues on how to treat different people with various medications. While also stating that the next study will focus on bacteria in the mouth, Gill said that there are at least 800 or more species in the mouth.

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