Mechanisms of Evolution

What is the shared ancestor of new, different species that arose from one population called?

• Common Ancestor

• Genetic Drift

• Gene Flow

• Mutation

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What is the term for a natural process resulting in the evolution of organisms best adapted to the environment?

• Mutation

• Natural Selection

• Gene Flow

• Crossing Over

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What is the term for the movement of alleles into or out of a population due to the migration of individuals?

• Genetic Drift

• Gene Flow

• Mutation

• Crossing Over

Which experiment found that complex organic molecules can form from more simple molecules in specific conditions?

• Miller-Urey Experiment

• Darwin's Experiment

• Mendel's Experiment

• Watson-Crick Experiment

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What is the term for the evolution of new species?

• Speciation

• Mutation

• Genetic Drift

• Natural Selection

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What is the ability of an organism to survive and reproduce in its environment called?

• Fitness

• Mutation

• Gene Flow

• Crossing Over

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Which of the following is true about genetic drift?

• It always selects for the most fit traits

• It is a non-random process

• It is more likely to occur in large populations

• It can lead to a reduction in genetic variation

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What is the bottleneck effect?

• A method to increase genetic diversity

• A major disaster that significantly reduces population size

• A process where a small group starts a new population

• A process where all traits are equally likely to survive

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What is the founder effect?

• A major disaster that significantly reduces population size

• A process where a small group starts a new population

• A method to increase genetic diversity

• A process where all traits are equally likely to survive

A forest fire ignites in the Sam Houston State Forest and kills many members of a population of pigmy rattlesnakes.

• Gene Flow

• Genetic Drift

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