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Y_Kistochka [10]
3 years ago
11

A biologist conducting a long-term field study noticed there were two types of mice in a valley. One type of mouse had webbed to

es, and one type of mouse lacked webbed toes. A dam was built in the valley turning the land into a wetland. As the years passed, all mice living in the valley were found to have webbed toes. No mice were found with non-webbed toes.
Which statement best explains the observed change in the mouse population?
a. The mice grew webbing to move more efficiently in the new environment.
b. Webbed-toed mice survived better and reproduced more than mice without webbed toes.
c. Webbed toes in mice are controlled by the environment.
d. The increased water levels in the valley increased the mutation rate in the mouse population.
Biology
1 answer:
Novosadov [1.4K]3 years ago
6 0

Answer: b. Webbed-toed mice survived better and reproduced more than mice without webbed toes.

Explanation:

Natural selection is a phenomenon that suggests that organisms that have a better structural and morphological advantage over the others have better chances of survival over the others.

The webbed toed mice have a survival advantage over the without the webbed toes because this can help the webbed toed mice to swim. The webbed toed trait will be beneficial and passed on to the next generation of the mice and the webbed toed mice will reproduce more than the mice without webbed toes.

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