Living organisms share an ancestor called the last universal common ancestor, or LUCA. LUCA is estimated to have lived ...

We have only one example of biology forming in the universe—life on Earth. But what if life can form in other ways? How do you look for alien life when you don’t know what alien life might look like?

Scientists think they’ve found a way to investigate the creation of cell membranes and DNA genomes that gave rise to the last universal common ancestor.

Add Yahoo as a preferred source to see more of our stories on Google. Researchers uncover gene clues that reveal how life evolved before Earth’s first universal ancestor. (CREDIT: Wikimedia / CC BY-SA ...