Survival of the Fittest

What is the most likely explanation of the data shown below?

• There has been a drought in the area that is affecting all life forms.

• The population of natural predators of the moths has gotten smaller.

• The moths are living in an environment with light trees.

• The moths are living in an environment with dark trees.

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Adaptations can be:

• camouflage

• ability to survive cold weather

• hunting skills

• all of the above

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Definition: adaptation

• inherited characteristic that increases chances of survival

• organisms with traits well suited to their environment survive and reproduce at a greater rate

• a growing population causes a scarcity of resources

• differences in the DNA sequence

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What Does Survival of the Fittest Mean?

• that those who are best adapted to their environment thrive and tend to be favored by evolution due to “natural selection”

• only the most physically strong or mentally strong thrive

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Are Organisms with any genetic traits suited to survive their immediate environment are more likely to procreate and pass on their genes?

• Yes

• No

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What did Darwin mean by "survival of the fittest"?

• “better designed for an immediate, local environment”

• "The more physical, and mental strength, the more likely to survive."

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Does "survival of the fittest" relate to natural selection?

• Yes

• No

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Who used the phrase "Survival of the fittest" first?

• Herbert Spencer

• Charles Darwin.

What is the main idea behind the concept of 'Survival of the Fittest'?

• Organisms best adapted to their environment are more likely to survive and reproduce.

• Only the strongest organisms survive.

• Survival is based on random chance.

• All organisms have an equal chance of survival.

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Which of the following is an example of 'Survival of the Fittest' in nature?

• A lion hunting a zebra.

• A plant developing resistance to a specific herbicide.

• A bird migrating to a warmer climate.

• A fish swimming upstream.

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