Natural Selection Stemscopedia with questions

What is the main idea of Charles Darwin's theory of natural selection?

• Organisms with traits well suited to their environments have greater success surviving and reproducing.

• All organisms have the same chance of survival regardless of their traits.

• Natural selection is a process that occurs only in animals, not plants.

• Traits are not inherited from parents to offspring.

Which of the following is an example of adaptation by natural selection?

• Yellow beetles becoming more common as red beetles are eaten.

• All beetles having the same color regardless of the environment.

• Beetles changing color randomly without environmental influence.

• Beetles choosing their color based on preference.

Natural selection leads to the predominance of certain traits in a population and the ______ of others.

The discovery of ______ in 1928 changed human medicine forever.

Explain how genetic variation contributes to natural selection.

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Analyzing

Describe how overuse of antibiotics can lead to antibiotic resistance in bacteria.

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Understanding

What role does competition play in natural selection?

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Understanding

A population of light-colored mice was moved from the Sand Hills to a wooded area with dark soils. What do think would happen to this population after 10,000 years or longer?

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How do you think scientists discovered that the flowering time of the field mustard had changed?

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People spray pesticides on crops to kill insects that eat and destroy the crops. However, these insects are becoming resistant to the pesticides. Explain how this could happen.

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