Individual populations may be fairly isolated for ... This diagram is an example of a simple phylogenetic tree. In most cases, researchers draw phylogenetic trees in such a way as to record ...

all lineages descended from the original population that was fixed for yellow flowers will also have yellow flowers. Of course, as phylogenetic trees branch, different lineages accumulate ...

Such a phylogenetic tree would use molecular sequence data to tell us both when each species or group of species first appeared, and which other groups on the tree are their closest relatives.

The Evolution Lab contains two main parts: Build A Tree: Students build phylogenetic trees themed around the evidence of evolution, including fossils, biogeography, and similarities in DNA.