Answer :
The evolutionary history of the group is described as basal taxon.
What is basal taxon?
A lineage represented by a phylogenetic tree that develops early from the root and from which no other branches diverged.
Phylogenetic tree can be explained as:
- Lineages that develop early from the root and are unbranched are called basal taxa.
- For example, if the branch point is rotated and the order of the taxa is changed, the information remains unchanged, since each taxon's evolution from the branch point is independent of each other.
- Early developed and unbranched lineages are the basal taxa.
In a phylogenetic tree the branch point in the tree (often drawn on the far left) represents the most recent common ancestor of all taxa in the tree. The lineages that distinguish themselves from all other members of the group early in the history of the group are called basal taxa.
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