Your DNA has never been created from scratch. Think of it like a recipe — passed down from parent to child over countless generations, all the way back 4 billion years to the earliest life on Earth. With tweaks and changes accumulating along the way, but always copied from something that already existed.  That's the one rule that has held the entire time: to make DNA, you need existing genetic material to copy from.  Scientists just found a protein that breaks this rule. "It was quite a

Tag-uri: DNA