Figure 25.2 Use the Following Information When Answering the Corresponding Question(s)

question 29

Multiple Choice

Figure 25.2
Use the following information when answering the corresponding question(s)
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,all of the same age.Figure 25.2 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.

-Examine Figure 25.2.What type of selection for body size appears to be occurring in these marine iguanas?

• A)directional selection
• B)stabilizing selection
• C)disruptive selection
• D)You cannot determine the type of selection from the above information.

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Definitions:

Spread

The process of extending, dispersing, or proliferating from one area to another, often used in the context of diseases, information, or species distribution.

Water Table

The upper level of an underground surface in which the soil or rocks are permanently saturated with water.

Infiltration

The process by which water on the ground surface enters the soil, often influencing groundwater recharge and soil moisture.

Diagram

A diagram is a simplified drawing or plan that represents ideas, concepts, structures, or systems visually, often used for explanation or troubleshooting.