On an Evolutionary Tree, Any Group That Includes a Common

question 27

Multiple Choice

On an evolutionary tree, any group that includes a common ancestor and all of its descendants is called monophyletic "one- tribe") . Draw the tree for Bacteria, Archaea, and Eukarya that we think best represents the current data. According to this tree, are all organisms alive today monophyletic?

• A) yes
• B) no

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