BASIC
GUIDELINE TO UNDERSTAND ROOTED AND UNROOTED TREES IN PHYLOGENETICS
What
is a PHYLOGENETIC TREE?
Phylogenetic
trees represent hypothesis about the evolutionary
relationships among a group of organisms. A phylogenetic tree may be built
using morphological (body shape), biochemical, behavioral, or molecular
features of species or other groups.In building a tree, we organize species
into nested groups based on shared derived traits (traits different from those
of the group's ancestor).
HOW
TO DRAW A PHYLOGENETIC TREE?
In a phylogenetic tree, the species of interest are
shown at the tips of the tree's branches. The branches themselves connect up in
a way that represents the evolutionary history of the species that is, how we
think they evolved from a common ancestor through a series of divergence
(splitting-in-two) events.For more details watch the video below:
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