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Based on the FUNCTIONAL Characteristics of the Cyanobacteria and Proteobacteria

question 30

Essay

Based on the FUNCTIONAL characteristics of the Cyanobacteria and Proteobacteria phyla, which phylum do you think is more deeply rooted in the tree of life (i.e., which phylum branches off closer to the last universal common ancestor)? Use at least two pieces of evidence to support your answer. How could you test your hypothesis?


Definitions:

Effortful Thinking

The cognitive processing that requires a deliberate, conscious effort to solve complex problems or to gain new insights.

Representativeness Heuristic

A cognitive shortcut that involves judging the probability of an event by its similarity to a prototype or example.

Availability Heuristic

A mental shortcut that relies on immediate examples that come to a given person's mind when evaluating a specific topic, concept, method, or decision.

Heuristic

A rule-of-thumb or shortcut that is used to make decisions or solve problems more quickly.

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