How to Read Cladograms?

Identify the root of the cladogram

Follow the branches from the root to the tips

Read shared derived traits at each branch point

Compare organisms by their most recent common ancestor

Determine which organisms are more closely related by shared branch points

Use the order of branching to see evolutionary relationships

Note that organisms sharing a more recent branch point are more closely related

Read from the base toward the tips, not from left to right

Check the trait labels, if present, at each node

Identify sister taxa as groups that share an immediate common ancestor

Use the tips only as endpoints, not as measures of progress

Compare branch patterns rather than physical appearance

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