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Massachusetts Comprehensive Assessment System


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MCAS QUESTION OF THE DAY:

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2010 Spring Release, Biology - High School
Download PDF Document Question 35 - Multiple-Choice

Reporting Category: Evolution and Biodiversity
Standard: 5.3 - Explain how evolution through natural selection can result in changes in biodiversity through the increase or decrease of genetic diversity within a population.

 
The Asian shore crab invaded parts of the eastern coast of the United States about 15 years ago. The Asian shore crab preys on blue mussels. In the time since the Asian shore crab arrived, the average shell thickness has increased in the blue mussel population.Which of the following is the most likely reason that this increase in shell thickness has occurred?
 
 
 

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Last Updated: May 11, 2016
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