An Unrooted Tree Containing Four Unrelated Species Can Become Rooted

question 54

Multiple Choice

An unrooted tree containing four unrelated species can become rooted by adding

• A)a descendant group related to two of the species.
• B)an unrelated outgroup.
• C)a distantly related outgroup.
• D)a descendant related to only one of the species.

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Definitions:

Long Run

A period in which all factors of production and costs are variable, allowing for full adjustment to change.

Supply Curves

Graphical representations illustrating the relationship between the price of a good and the quantity of the good that producers are willing to supply.

Immediate Market Period

The shortest time frame in economic analysis, where the supply of goods is completely inelastic, meaning quantity cannot be changed in response to price changes.

Short Run

A period where at least one factor of production is fixed, typically seen in economics as a timeframe where businesses cannot adjust all inputs.