Rock Pocket Mouse Evolution Quiz

What is the genus and species of Rock Pocket mice?

• Didelphis virginiana
• Chaetodipus intermedius
• Lynx rufus
• Spizella arborea

Where do rock pocket mice live geographically?

• Northwestern U.S.
• Southwestern U.S.
• Southeastern U.S.
• Northeastern U.S.

Which of the following is TRUE? Read carefully.

• Most mice have sandy, light-colored coat to match the environment where they live.
• Most mice have dark colored fur to match the environment where they live like their ancestors.
• Most mice contrast with their environment.
• Most mice are heterozygous for fur color and therefore display both phenotypes.

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Which word describes the form of a dark pigment in organisms?

• panoramic
• manlanic
• peramic
• melanic

Why did the MCr1 gene mutation become prevalent in the rock pocket mouse populations?

• The mutation produced dark colored mice who were better able to survive and reproduce in basalt environments.
• The mutation produced light colored mice who were better able to survive and reproduce in basalt environments.

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The  MCr1 mutation across a variety of species shows that

• evolution is by design.
• evolution of melanism is a repeatable process.
• new mutations of melanism comes from a common ancestor.
• evolution of melanism is random.

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