Multiple Choice
Which of the following was the average beak size of finches on the island of Daphne Major in 1976?
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1. Introduction to Biology
Natural Selection and Evolution
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Which of the following is an example of an adaptation?
A
A population decrease due to a natural disaster
B
Random mutation in a gene with no effect on survival
C
A sudden change in weather patterns
D
The long neck of a giraffe allowing it to reach high leaves
Verified step by step guidance1
Understand the concept of adaptation: An adaptation is a heritable trait that increases an organism's ability to survive and reproduce in its environment. It is typically shaped by natural selection over generations.
Analyze the options provided: Evaluate each option to determine if it fits the definition of an adaptation. For example, a population decrease due to a natural disaster is not an adaptation because it is an event, not a heritable trait.
Consider the role of random mutations: A random mutation in a gene with no effect on survival is not an adaptation because it does not provide a survival or reproductive advantage.
Evaluate environmental changes: A sudden change in weather patterns is an external event and not a trait of an organism, so it cannot be considered an adaptation.
Identify the correct example: The long neck of a giraffe allowing it to reach high leaves is an adaptation because it is a heritable trait that provides a survival advantage by enabling the giraffe to access food sources that other animals cannot reach.
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