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Scientists have proved Darwin wrong on some issues of evolution
Richard Lenski, highly respected in academic circles biologist at the University of Michigan, speaking at a special scientific event held on February 26, said that Charles Darwin was actually wrong in some aspects of evolution. The researcher was able to prove that in some cases the process of evolution, we can observe even now.
Issue for Lenski in this study was the approval of Charles Darwin in his “Origin of Species” that evolution – this is an extremely slow process, requiring a huge amount of time even if the individual changes in the specific form of which they are exposed from generation to generation.
Lenski determined that the process of evolution actually occurs can be seen in it for decades, and not through the centuries and millennia. This conclusion biologist came after a 26-year experiment to observe the development of E. coli (Escherichia coli).
Thing perfectly clear in the study is that the freezers, which were used for this experiment and observation, working as a kind of time machine, allowing scientists to look at the process of evolution with your own eyes. Lenski argues that in 26 years of research has witnessed the birth and death of more than 59,000 generations of E. coli.
One of the longest-running scientific experiments to study the processes of evolution began in the distant 1988. A scientist observes that over time a culture of bacteria increased in size by almost half, and show a faster process of mutation than before. Besides microorganisms have learned more efficient use of glucose, which was in their growth medium.
The interesting part here is also the fact that one of the twelve individual generations of bacteria formed, as he says Lenski, a new type of bacteria that can eat and survive in an environment consisting of a derivative element citric acid, citrate, which scientist added to grow the bacterial environment. Usually, coliform bacteria can not live in this environment, but single culture, to the surprise of the scientist was able to adapt.
Speaking at the launch of Time Travel in Experimental Evolution, held at the Museum of Mineralogy and Geology at Harvard University, Lenski also said that the current generation of coliform bacteria show a nearly 80 percent faster growth compared with those generations of bacteria with which the scientist began its work 26 years ago.
“I call it research experiment because the bacteria that I learn, continue to behave incredibly interesting for science. I hope that this experiment will continue after me “- says the scientist.
Studies like this are very important, since they can provide the necessary clues to answer questions about how there were different kinds of living on our planet, and how of “simple” turned “complicated.” These questions plagued evolutionary biology for centuries and perhaps that our generation is on the verge of finding the answers to them.
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Tags: Biology , Charles Darwin , Evolution .
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