Lesson 22 Darwin and Natural Selection

The species of finches that Darwin observed differed in the shape of their beaks.  According to Darwin, all of these species probably differed due to...

• natural selection
• had migrated from Africa
• had descended from similar birds in Africa
• ate the same diet

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Natural selection is the process by which...

• the age of selected fossils is calculated
• organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment
• acquired traits are passed on from one generation to the next
• all answers are correct

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 In a population of clover flowers, there are both white and purple varieties.  The cows that graze the field where the clover grows prefer the purple variety.  Over time, the white clover flowers become much more numerous and the purple ones more scarce.  This is an example of which process that can cause evolutionary change?

• genetic equilibrium
• genetic mutation
• natural selection
• overproduction

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According to Darwin, evolution occurs...

• only through artificial selection
• during half-life periods of 5,715 years
• because of natural selection
• so rapidly that it can be observed easily

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Which of the following is a correct statement about the relationship between natural selection and evolution?

• Natural selection results from evolution.

• Natural selection includes evolution as a part of it.

• Natural selection is the mechanism of evolution.

• Natural selection and evolution are the same thing.

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

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Survival of the Fittest and Evolution were proposed by what scientist?

• Charles Darwin
• Albert Einstein
• Steven Hawking
• Isaac Newton

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What are the most studied animals in the galapagos?

• Finches
• Tortoises
• Turtles
• Lizards

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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An inherited trait that increases and organism's chance for survival.

• Fitness
• Acquired Trait
• Adaptation
• Gene Pool

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