Trait evolution is not predictable ... Of course, as phylogenetic trees branch, different lineages accumulate different traits. Figure 3 illustrates this idea using a clade that contains four ...

An evolutionary tree depicting the relationships among living apes, Ardi, and modern humans. Each branch on the tree represents a species and their intersections represent their common ancestors.

Indeed, the most basic postulate of evolutionary theory is that the same general phenomenon of descent from common ancestry applies to both the most diverse branches of the tree of life and the ...

An international team of experts has resolved long-standing questions about the evolutionary history of mollusks, one of the ...

But then researchers started doing chromosome work and chemical studies and created a formalized method for building computerized evolutionary trees that we now call cladistics. My colleague ...