Phylogenetic Tree Exploration
This worksheet helps 8th-grade students understand phylogenetic trees, evolutionary relationships, and common ancestry among species.
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Phylogenetic Tree Exploration
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Read each question carefully and answer to the best of your ability. Refer to the provided phylogenetic tree diagram for relevant questions.
Use the following simplified phylogenetic tree to answer the questions below.
1. What do the branches in a phylogenetic tree represent?
Individual organisms
Evolutionary lineages
Geographical locations
Genetic mutations
2. Which of the following species are most closely related according to the diagram?
Species A and Species C
Species B and Species D
Species C and Species D
Species A and Species B
3. A phylogenetic tree illustrates the evolutionary among different species.
4. The point where two branches diverge on a phylogenetic tree represents a ancestor.
5. All species on a phylogenetic tree share a common ancestor.
True
False
6. The length of the branches in a phylogenetic tree always indicates the amount of time that has passed.
True
False
7. Briefly explain what a phylogenetic tree is designed to show.
8. Based on the provided diagram, which species are more closely related: Species A and B, or Species C and D? Explain your reasoning.