SAVVAS Unit 5 Chapter 17 & 18

In addition to studying living organisms, Darwin studied the preserved remains of ancient organisms called

• fossils.

• adaptations.

• homoligies.

• vestigial structures.

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Which of the following would an animal breeder use to increase the number of cows that give the most milk?

• overproduction

• genetic isolation

• acquired characteristics

• artificial selection

The akiapola'au uses its long top bill to probe for insects inside trees. This beak is an example of

• an adaptation.

• fitness.

• an acquired characteristic.

• a variation.

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During the process of natural selection, what determines which organisms survive and reproduce?

• number of adaptations

• variety of adaptations

• evolutionary fitness

• population size

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The wing of a bat and the wing of a bee are an example of what type of structures?

• analogous structures

• homologous structures

• vestigial structures

• unrelated structures

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The combined genetic information of all members of a particular population forms a

• gene pool.

• niche.

• phenotype.

• population.

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Match the type of isolation with the example:

• behavioral isolation

• 
• reproductive isolation

• 
• temporal isolation

• 
• geographic isolation

• 

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Match the following:

• gene flow

• 
• bottleneck effect

• 
• sexual selection

• 
• founder effect

• 

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Use the image to drag the right type of selection to the description.
LEFT: When individuals at one end of the curve have more fitness than elsewhere - ​ (a)  
CENTER: When individuals at both extremes of the curve have more fitness than the center - ​ (b)  
RIGHT: When individuals near the center of the curve have higher fitness - ​ (c)   ​

• directional selection
• disruptive selection
• stabilizing selection
• random selection
• linear selection
• circular selection

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Mutations that improve an individual's ability to survive and reproduce are

• harmful.

• neutral.

• beneficial.

• chromosomal.

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