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777dan777 [17]
3 years ago
7

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

Biology
2 answers:
V125BC [204]3 years ago
5 0
B. synapomorphy

A synapomorphy is a shared apomorphy that distinguishes a clade from other organisms.
A clade also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
andre [41]3 years ago
5 0

The answer is B. Synapomorohy.

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