If You Were Using Cladistics to Build a Phylogenetic Tree

question 68

Multiple Choice

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

• A) lion
• B) domestic cat
• C) wolf
• D) leopard

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Definitions:

Signaling Molecule

A chemical substance, such as a hormone or neurotransmitter, that is involved in transmitting information between cells and tissues within an organism.

Receptor

A molecular structure within or on the surface of a cell that binds to specific molecules like hormones or neurotransmitters, triggering a specific cellular response.

Histamine

Substance released from mast cells that causes inflammation.

Allergic Reaction

An immune system response to a foreign substance that is not typically harmful to the body, such as pollen or certain foods.