You may or may not know someone named Luca, but you owe your life to a Luca all the same. What’s more, so do we all. That vital Luca is better known as LUCA—for “last universal common ancestor,” the ...

An organism suitable for studying a specific trait, disease, or phenomenon, due to its short generation time, characterized genome, or similarity to humans; examples are a fly, fish, rodent or pig, ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What is life? This is a question that is often asked and typically confused. The confusion starts ...

The Darwinian revolution created a new approach to classification by proposing a common origin for living organisms. Since then, scientists have grouped animals and plants phylogenetically, rather ...