Cladogram Analysis Worksheet
Grade 12 Biology worksheet on cladogram analysis, focusing on interpreting evolutionary relationships and identifying derived characteristics.
Includes
Standards
Topics
Cladogram Analysis
Name:
Date:
Score:
Carefully read each question and analyze the provided cladogram to determine the most accurate answer. Your understanding of evolutionary relationships and derived characteristics will be assessed.
Use the following cladogram to answer questions 1-3.
1. Which organism is most closely related to Organism C?
Outgroup
Organism A
Organism B
Organism D
2. Which trait is a shared derived characteristic for Organisms B, C, and D?
Trait 1
Trait 2
Trait 3
Trait 4
3. Which organisms form a monophyletic group with Organism B but exclude Organism A?
C and D
Outgroup, A, C, and D
A, C, and D
Outgroup, A, and C
4. A is a diagram that shows the evolutionary relationships among a group of organisms.
5. A shared derived characteristic that evolved in an ancestor of a group and is present in all its descendants is called a .
6. An is a species or group that is closely related to the group being studied, but not part of it.
7. Explain the difference between an ancestral trait and a derived trait in the context of cladogram analysis.
8. In a cladogram, the length of the branches represents the amount of evolutionary time or genetic change.
True
False
9. All organisms descended from a common ancestor form a polyphyletic group.
True
False
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