Which of the Following Is an Example of Evolution as a Result

question 31

Multiple Choice

Which of the following is an example of evolution as a result of selection acting on genetic variation?

• A) Achromatopsia (extreme sensitivity to light and lack of color vision) becomes widespread among individuals on an isolated island because a common ancestor carried a mutant gene.
• B) A random mutation produces a novel odorant receptor that allows a fly to detect a specific fruit, allowing it to monopolize a new food source and produce more offspring.
• C) In a small population of birds, more individuals that produce one song variant reproduce than those that produce a different song variant, just by chance.
• D) Frog eggs that happen to be laid during a severe drought are much less likely to survive than their siblings that developed in a wetter month.
• E) All of the above

---

Definitions:

Predicted Values

The values estimated using a statistical model or algorithm, representing the expected outcome.

Coefficient of Determination

A statistical measure, often denoted as R-squared, that represents the proportion of the variance in the dependent variable that is predictable from the independent variable(s).

Independent Variable

A variable in an experiment or analysis that is manipulated or categorized to observe its effect on a dependent variable.

Dependent Variable

The variable in an experiment that is expected to change as a result of manipulations of the independent variable.