Review Cladograms

Front

What is a cladogram?

Back

A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

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What does a common ancestor represent in a cladogram?

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A common ancestor represents a species from which two or more descendant species evolved.

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How can you determine which species are most closely related on a cladogram?

Back

Species that share a more recent common ancestor on a cladogram are considered to be more closely related.

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What is the significance of branching points (nodes) in a cladogram?

Back

Branching points (nodes) represent the divergence of two or more species from a common ancestor.

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What characteristic do all animals to the right of the hagfish in a cladogram share?

Back

All animals to the right of the hagfish have jaws.

Front

Which group of dinosaurs is most closely related to birds?

Back

Saurischian dinosaurs are most closely related to birds.

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What can be concluded if two species share a node on a cladogram?

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If two species share a node, it indicates that they have a common ancestor and are related.

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What does it mean if a species is depicted as a terminal taxon in a cladogram?

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A terminal taxon is a species or group that is at the end of a branch in a cladogram, representing a living or extinct species.

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What is the relationship between arthropods and mollusks according to cladograms?

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Arthropods and mollusks are closely related, sharing a more recent common ancestor compared to other phyla.

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How do cladograms help in understanding evolutionary biology?

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Cladograms help visualize the evolutionary pathways and relationships among species, aiding in the study of evolutionary biology.