Evolution Terms

If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decreases, which pattern of natural selection has occurred?

• Directional selection

• Disruptive selection

• Stabilizing selection

• Punctuated equilibrium

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An extreme phenotype is favored causing the alleles to shift toward that phenotype

• Disruptive Selection
• Directional  Selection
• Stabilizing Selection
• Artificial Selection

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Natural selection can best be defined as the _____.

• survival of the biggest and strongest in a population
• survival and reproduction of those in the largest area
• elimination of the smallest organism by the biggest
• survival and reproduction of those that are best adapted

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Organisms with the most beneficial traits will survive and reproduce. This is commonly known as ______.

• DNA

• variations.

• fitness.

• ecosystems.

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Artificial selection is...

• the process by which humans determine which traits to pass on and which traits to eliminate based upon breeding.

• the process by which natures selects who lives and dies.

• the process by which animals adapt to their surroundings.

• the process by which people take over ecosystems.

An organism's appearance or other observable characteristics:

• phenotype
• recessive
• genotype
• dominant

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______ is moving towards an extreme phenotype which is favored causing the alleles to shift toward that phenotype

• Disruptive Selection

• Directional Selection

• Stabilizing Selection

• Artificial Selection

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Genetic diversity decreases and individuals at the center of the curve have higher fitness.

• Disruptive Selection
• Directional  Selection
• Stabilizing Selection
• Artificial Selection

When individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle this is called _____.

• directional selection

• stabilizing selection

• disruptive selection

• gradualism

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The ability of an organism to survive and reproduce is known as...

• Adaptation
• Trait
• Fitness
• Variation

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