Life on Earth had to begin somewhere, and scientists think that “somewhere” is LUCA—or the Last Universal Common Ancestor.

from microphotography to molecular biology, with which to examine the process of development in embryos. These new tools reveal that different descendants of a common ancestor do indeed usually go ...

The origins of life on Earth have long fascinated scientists, particularly the nature of the last universal common ancestor (LUCA). LUCA, the root of the evolutionary tree from which Bacteria and ...

What we can know about biology before the last universal common ancestor is limited—and we should be circumspect in filling in the gaps. In a world in which magical thinking persists in popular ...

In this evolutionary tree, species A and B share a recent common ancestor. Species A is therefore most similar to species B. Species F and G also share a recent, common ancestor, however this ...

What do phylogenetic trees illustrate? These diagrams don't just organize knowledge of biodiversity - they also show us that living species are the summation of their evolutionary history.

While their evolutionary origin has been widely debated, paleontological discoveries and developmental biology studies ... even earlier presence in the common ancestor of dinosaurs and pterosaurs ...

All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests that this organism likely lived on Earth only 400 million years after its formation.