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For many years, biology was based on a fundamental principle: DNA is always copied in the same way. A DNA molecule acts as a ‘template’, and an enzyme produces its copy. This process was considered universal for all organisms, from bacteria to humans.
However, a recent scientific discovery suggests that things may not be so simple. It appears that bacteria may be able to use proteins to ‘build’ DNA that fights viruses.
Until now, scientists believed that DNA is replicated only based on other DNA. The information in life always follows the specific direction DNA → RNA → proteins, which operates as a universal mechanism across all organisms. This model is called the ‘central dogma of biology’ and forms the foundation of modern science.
A new study has shown that in certain bacteria there exists a different mechanism. Instead of DNA being copied from other DNA, it appears that a protein can be used as a ‘guide’ to create DNA.
In simple terms:
This does not mean the old rules are wrong. It means they are not the only ones.
This discovery changes the way we understand life. It shows that even in the simplest organisms there are mechanisms we had not imagined.
It also opens new directions and questions for research:
One question is whether something similar could happen in plants. So far, there is no evidence that plants use this specific mechanism. However, plants are far more complex than they appear. They have evolved their own ways to survive, adapt, and defend themselves. For example:
This means that even if they do not use the same mechanism as bacteria, they may still possess other ‘alternative solutions’ that we have not yet discovered.
The key conclusion is simple: life is not limited to a few fixed rules. Instead, it constantly finds new ways to function. What we took for granted yesterday may change today – and this reminds us of something important: as science advances, we realize how much more there is still to learn. Nature, ultimately, is more creative and flexible than we imagined.
*The above is not medical advice but mere suggestions for improving your diet. Before herbal use you should consult your doctor, especially for those who have health issues or are pregnant or under the age of 6.
Evropi-Sofia Dalampira holds a PhD in Agricultural Economics, an MSc in Botany Biology, and an MSc in Horticulture &Viticulture.
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