You Are a Biologist on a Trip to an Island

question 34

Multiple Choice

You are a biologist on a trip to an island in the South Pacific. While on the island, you are allowed to collect DNA samples from a local species of rat that resembles a species seen on a nearby continent. If your DNA analysis also indicates the two species are closely related, you might conclude that the evolution of the two separate species was an example of _____ speciation through _____.

• A)allopatric; dispersal
• B)allopatric; vicariance
• C)sympatric; dispersal
• D)sympatric; vicariance

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Definitions:

Positive Reinforcement

A method in behaviorism used to increase the likelihood of a desired behavior by following it with the addition of a positive stimulus.

Outspoken

Someone characterized by the willingness to express opinions and thoughts openly and without reservation.

Psychodynamic Theorist

A psychologist or theorist who focuses on understanding the influence of the unconscious mind on behavior and mental processes, following principles initially proposed by Freud.

Carl Rogers

An influential American psychologist who founded the humanistic approach to psychology, emphasizing the importance of free will, self-actualization, and the concept of the self.