Natural Selection vs Genetic Drift

What leads to the predominance of certain traits in a population, and the suppression of others in nature?

• Artificial Selection

• Natural Selection

• Selective Breeding

• Genetic

  Therapy

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What is Survival of the Fittest?

• Artificial Selection

• Genetic Therapy

• Selective Breeding

• Natural Selection

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What is adaptation acting over generations by which species change over time in response to changes in environmental conditions?

• Natural Selection

• Artificial Selection

• Genetic Therapy

• Selective Breeding

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Overhunting produces prey that is small and short lived. This is an example of what type of selection?

• Genetic Modification

• Gene Therapy

• Natural Selection

• Artificial Selection

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This occurs when a large population is drastically reduced by an event such as a natural disaster; the population's new gene pool only contains alleles from the survivors. This is known as the (a)   effect.

• Founder effect

• Bottleneck effect

• Meteor effect

• Natural selection

Answer explanation

The bottleneck effect occurs when a significant portion of a population is eliminated, leading to a reduced gene pool comprised only of the surviving individuals' alleles, as described in the question.

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Estuaries are becoming more and more polluted. Some fresh water aquatic animals are now able to tolerate salt water environments for short period of time. What is this?

• Artificial Selection

• Natural Selection

• Selective Breeding

• Genetic Modification

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How does Natural selection cause disadvantageous traits to become less common?

• Individual with those traits are more likely to reproduce.

• Individuals with those traits are less likely to reproduce.

• Individuals with those traits are more likely to survive for longer periods of time.

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Genetic Drift occurs when a specific allele in a species does not show up anymore in a small population of organisms. For example, brown and white rabbits in the desert exist together. White ones disappeared over the next 10 years. What would cause this to happen?

• Natural Selection

• Artificial Selection

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Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? 

• Evolution 

• Variation 

• Adaptation

• Natural Selection 

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Predict which moth would increase in population

• light 

• dark

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