Tracing Evolutionary Pathways Through Phylogenetic Trees

The video tutorial explains phylogenetic trees, starting with the root as the common ancestor of species. It covers how to trace evolutionary pathways and the significance of nodes, branches, and leaves. The tutorial discusses species relationships, emphasizing the importance of evolutionary distance. It introduces terms like basal taxon, sister taxon, and polytomy, and concludes by inviting viewer interaction.

What is the starting point of a phylogenetic tree called?

• Branch

• Root

• Node

• Leaf

How do phylogenetic trees change over time?

• They change with seasons

• They change with species extinction

• They change with new data

• They remain constant

What is a terminal node in a phylogenetic tree also known as?

• Root

• Branch

• Leaf

• Node

Which of the following describes species that are closely related in a phylogenetic tree?

• They have a large distance between nodes

• They are on different branches

• They have a small distance between nodes

• They are on the same branch

What is a branch that does not further divide called?

• Leaf

• Basal taxon

• Sister taxon

• Polytomy

What term is used when two branches diverge from a single lineage?

• Basal taxon

• Leaf

• Polytomy

• Sister taxon

What is it called when a lineage diverges into more than two branches?

• Basal taxon

• Sister taxon

• Polytomy

• Leaf

Which of the following is NOT a feature of a phylogenetic tree?

• Root

• Node

• Leaf

• Flower

What is the purpose of a phylogenetic tree?

• To show the evolutionary pathway of species

• To display the geographical distribution of species

• To list the number of species in an area

• To show the diet of different species

What should you do if you have questions about the phylogenetic tree video?

• Search online

• Ask a friend

• Leave a comment

• Ignore them