The Fish in a Certain Population Average 10 Millimeters in Length

question 102

Multiple Choice

The fish in a certain population average 10 millimeters in length. Imagine that a population of predatory birds arrives in the area, but they cannot eat fish longer than 15 millimeters. After a decade, if the fish average 14 millimeters in length, what probably happened?

• A)The presence of the predator caused mutations for larger fish to occur.
• B)There was stabilizing selection for fish length.
• C)The longer fish survived and produced more offspring than shorter fish.
• D)There was disruptive selection for fish length.
• E)The fish and the predator coevolved.

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Definitions:

Confidence Interval

An estimated range of values calculated from a given set of data, predicting where an unknown population parameter might fall with a certain degree of confidence.

P-value

A statistical measure that helps to determine the significance of results obtained in hypothesis testing, indicating the probability of observing results at least as extreme as those observed, under the assumption that the null hypothesis is true.

Smoking Status

A classification of individuals based on their usage of tobacco products, typically categorized into current smoker, former smoker, and never smoked.

P-value

A statistical measure that indicates the probability of the observed data under the assumption that the null hypothesis is true.