If the Two Sister Species on the Phylogenetic Tree in the Figure

question 41

Essay

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."

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Definitions:

Court Authority

The legal power and jurisdiction granted to courts to hear cases, make decisions, and enforce the law.

Statutory Law

A law enacted by the legislative branch of a government.

State Courts

Courts established by the laws of each state in the U.S. that have jurisdiction over disputes and cases within their respective states.

Supremacy Clause

A clause in the U.S. Constitution declaring that federal laws are the supreme law of the land and take precedence over state laws.