That is the conclusion of a radical rethink of what it took for complex life to evolve here on Earth. It suggests that complex alien life-forms could only evolve ... they need using the membrane ...

How did the complex ... using microscopic methods. This member of the Asgard archaea exhibits unique cellular characteristics and may represent an evolutionary "missing link" to more complex life ...

Scientists may have unearthed a missing link between simple and complex ... "There are only a handful of genes that are ubiquitous," meaning they are present in all life forms, Melnikov said.