If the two sister species on the phylogenetic tree in the figure below differ from the other two species in a single character state (e.g., dark fur, whereas the other taxa have light fur), where would the evolutionary change(s) have occurred? Indicate change(s) by placing an arrow-or arrows-on the tree. Be sure to label the presumed ancestral state, and label the arrow(s) as a "loss" or "gain." 
Definitions:
Verbally Abusive
Engaging in the use of words to harm, control, or belittle another individual, often a pattern in abusive relationships.
Reaction Formation
A psychological defense mechanism where individuals behave in a manner opposite to their actual feelings or impulses.
Endorphins
Natural chemicals in the body that interact with the brain's receptors to reduce pain and boost happiness.
Well-being
The state of being comfortable, healthy, or happy, encompassing physical, mental, and emotional health.
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