The increase in the frequency of one phenotype in a wild population of fish could be due to: 1. an advantageous mutation. 2. increased reproductive success of individuals with that phenotype. 3. a change in the environment. A) 3 only B) 1 and 2 only C) 1, 2 and 3 D) 2 and 3 only E) 1 only
Question
The increase in the frequency of one phenotype in a wild population of fish could be due to:
- an advantageous mutation.
- increased reproductive success of individuals with that phenotype.
- a change in the environment.
A) 3 only B) 1 and 2 only C) 1, 2 and 3 D) 2 and 3 only E) 1 only
Solution
The correct answer is C) 1, 2 and 3.
Here's why:
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An advantageous mutation: If a mutation occurs that gives a fish a certain advantage (like better camouflage or faster swimming speed), this phenotype could become more common over time as these fish are more likely to survive and reproduce.
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Increased reproductive success of individuals with that phenotype: If fish with a certain phenotype are more successful at reproducing, this phenotype will become more common in the population. This is the basic principle of natural selection.
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A change in the environment: Changes in the environment can also lead to changes in phenotype frequency. For example, if the water temperature rises, fish with a phenotype that makes them more tolerant to heat could become more common.
So, all three factors could potentially lead to an increase in the frequency of a certain phenotype in a wild population of fish.
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