Multiple Choice
When populations are only partially reproductively isolated, which of the following may occur?
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1. Introduction to Biology
Natural Selection and Evolution
Multiple Choice
In an area affected by industrial pollution, researchers observed the following data on moth populations:- Light-colored moths: 20% survival rate- Dark-colored moths: 75% survival rateBased on this data, which type of moth is best adapted to its environment?
A
Light-colored moths
B
Neither type is adapted
C
Both types are equally adapted
D
Dark-colored moths
Verified step by step guidance1
Understand the concept of adaptation: In biology, adaptation refers to the ability of an organism to survive and reproduce in its environment. Organisms that are better adapted have higher survival rates.
Analyze the survival rates provided: Light-colored moths have a survival rate of 20%, while dark-colored moths have a survival rate of 75%. This indicates that dark-colored moths are surviving at a much higher rate in the polluted environment.
Consider the environmental factor: Industrial pollution likely caused changes in the environment, such as darkening of surfaces due to soot. This would make light-colored moths more visible to predators, reducing their survival rate, while dark-colored moths blend in better, increasing their survival rate.
Compare the survival rates to determine adaptation: Since dark-colored moths have a significantly higher survival rate, they are better adapted to the polluted environment compared to light-colored moths.
Conclude based on the data: The type of moth best adapted to the environment is the dark-colored moth, as its higher survival rate demonstrates its ability to thrive under the conditions caused by industrial pollution.
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