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2. Mammary glands are shared characteristic among mammals and the oldest common ancestor of mammals. This is an example of a

O A. cladogram.
O B. synapomorphy.
O c. taxonomy.
O D. phylogeny.

User Viswesn
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Your answer is B and synapomorphy
User Savageman
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Answer: B

Step-by-step explanation:

User SimplyZ
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