A group of scientists have issued a stark warning over "mirror bacteria" that poses an " unprecedented risk " to life on Earth. Molecules such as DNA or amino acids are described by scientists as being structured like human hands - the left and right hands look similar, but are crucially different. This "handedness" is what allows molecules to perform specific biological functions. But it also means it is possible to build "mirror" versions of organisms by ditching the "right-handed" DNA of

Tag-uri: DNA