Tracing Evolutionary Pathways Through Phylogenetic Trees

Tracing Evolutionary Pathways Through Phylogenetic Trees

Assessment

Interactive Video

Biology, Science, Other

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

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.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the starting point of a phylogenetic tree called?

Branch

Root

Node

Leaf

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do phylogenetic trees change over time?

They change with seasons

They change with species extinction

They change with new data

They remain constant

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Root

Branch

Leaf

Node

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a branch that does not further divide called?

Leaf

Basal taxon

Sister taxon

Polytomy

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Basal taxon

Leaf

Polytomy

Sister taxon

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Basal taxon

Sister taxon

Polytomy

Leaf

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