The mice living in an area changed from having brightly colored fur to having darkly colored fur. How did natural selection most likely result in this evolutionary change? Bright mice were not able to blend into their environment as easily as dark mice, so they did not continue to survive and reproduce. Bright mice produced fewer offspring than dark mice, so the bright mice became outnumbered within days. Random changes in the genetics of bright mice produced more dark mice, so the bright mice quickly died off. Random changes in the genetics of dark mice produced fewer bright mice, so the dark mice took over the population.

Question

Biology

Trace Salas

1 June, 08:05

The mice living in an area changed from having brightly colored fur to having darkly colored fur. How did natural selection most likely result in this evolutionary change? Bright mice were not able to blend into their environment as easily as dark mice, so they did not continue to survive and reproduce. Bright mice produced fewer offspring than dark mice, so the bright mice became outnumbered within days. Random changes in the genetics of bright mice produced more dark mice, so the bright mice quickly died off. Random changes in the genetics of dark mice produced fewer bright mice, so the dark mice took over the population.

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Answers (2)

Know the Answer?

Louis Sawyer · Answer 1

Answer:the correct answer is a. Bright mice were not able to blend into their environment as easily as dark mice, so they did not continue to survive and reproduce.

Explanation:

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Johanna Charles · Answer 2

Answer: Random changes in the genetics of bright mice produced more dark mice, so the bright mice quickly died off.

Explanation:

Due to the changes in the area (such as development of factories that releases black soot formed from the burning of coal), the trait for darkly colored fur is favoured over white coloured fur in an attempt to have mice with fur colour that can blend with the black coloured environment.

This process is referred to as industrial melanism, since natural selection causes dark-colored mice to evolve from pre-existing light colored ones.