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

A. phylogeny.
B. synapomorphy.
C. cladogram.
D. taxonomy.

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alexis1713
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".
abbusaicharan02

This is an example of a B. synapomorphy.

What is the definition of Apomorphy and Syndrome?

: A characteristic or characteristic shared by two or more taxonomic groups and derived by evolution from a common ancestral form.

Cinapomorphi is a property (morphological, molecular, or behavioral) shared by taxon groups for inheritance from a common ancestor. Therefore, the co-derived trait is evidence of a hierarchical structure associated with historical connections.

For example, the presence of the mammary gland is a symplesiomorphy of mammals associated with tetrapods, but a symplesiomorphy of mammals associated with each other (eg rodents and primates).

Advanced character states are shared by two or more taxa. It is inherited from the latest common ancestor, and it is speculated that there is no such character in that ancestor, and it is derived by evolution.

Learn more about Mammary glands here: https://brainly.com/question/26175262

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