Use the Following Information When Answering the Corresponding Questions)

question 33

Multiple Choice

Use the following information when answering the corresponding questions) .
Martin Wikelski and L. Michael Romero Body size, performance and fitness in Galápagos marine iguanas, Integrative and Comparative Biology 43 [2003]:376- 86) measured the snout- to- vent anus) length of Galápagos marine iguanas and observed the percent survival of different- sized animals. Figure 23.2 shows the log snout- vent length SVL, a measure of overall body size) plotted against the percent survival of these different size classes for males and females.
Figure 23.2
-Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?

• A) stabilizing selection
• B) directional selection
• C) sexual selection
• D) disruptive selection

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Definitions:

Behavior Modification

A systematic approach to changing behavior through the application of the principles of conditioning.

Psychoanalysis

A therapeutic approach and theory of psychology developed by Sigmund Freud that emphasizes unconscious motivations and conflicts as influences on behavior.

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A branch of psychotherapy that focuses on solving family problems through family counseling and working on family relationships.

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