HEREDITY
GENE INTERACTIONS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT an example of natural selection?
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People selectively breeding hamsters.
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Insect populations developing resistance to certain pesticides.
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Bacteria becoming resistant to antibiotics.
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Male birds of certain species developing colorful feathers to attract female mates.
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Explanation:
Detailed explanation-1: -The correct answer is: Bacterial populations in hospitals acquire resistance to antibiotics used to treat illness.
Detailed explanation-2: -Natural selection is a simple mechanism that causes populations of living things to change over time. In fact, it is so simple that it can be broken down into five basic steps, abbreviated here as VISTA: Variation, Inheritance, Selection, Time and Adaptation.
Detailed explanation-3: -For example, evolving long necks has enabled giraffes to feed on leaves that others can’t reach, giving them a competitive advantage. Thanks to a better food source, those with longer necks were able to survive to reproduce and so pass on the characteristic to the succeeding generation.
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