AnswersCA-Integrated Science 8 BUnit Test — Unit testQuestion 19
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Unit Test — Unit test

Question 19 • CA-Integrated Science 8 B

Due to a genetic mutation, a mouse is born with fur that is not as light as fur in other mice of the same population. This makes it easier for the mouse to blend into the environment.

Answer
A
The mouse with the mutation will not survive, and the trait will disappear from the population.
B
The mouse with the mutation will survive and reproduce, and the trait will spread over future generations.
C
The mouse with the mutation will not survive, but the trait will appear again in the next generation.
D
The mouse with the mutation will survive and reproduce, but the trait will disappear because it was caused by a mutation.

Explanation

The darker fur helps the mouse blend into its environment, making it less likely to be seen by predators. If the mouse survives and reproduces, it can pass the mutation to its offspring. Over generations, the helpful trait may become more common in the population, so choice B is correct.

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