Genetics and Evolution

Which statement supports the theory of natural selection

• All organisms produce more offspring than can survive.
• Organisms live in harmony with one another despite limited resources.
• Organisms with favorable traits are more likely to die.
• Over time advantageous traits will be found in more of the population.

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What will most likely happen if a species can no longer produce offspring?

• It will become extinct.
• It will evolve into another species.
• It will move into a new environment and adapt.
• It will begin to mutate into another organism.

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Which part of Darwin's theory of evolution may be used to describe the results of when lions prey on antelope?

• natural selection
• survival of the fittest
• adaptation to environment
• variation in species

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A student made a table showing different types of finches and their food sources. What can be inferred from this information?

• Genetic mutation leads to the evolution of new species.
• Organisms evolve based on their habitats.
• Geographical isolation leads to the evolution of new species.
• Organisms evolve based on their feeding habits.

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Dark moths began to outnumber white moths in cities after the Industrial Revolution. What is the most likely reason for this change?

• Light-colored moths mutated into dark colored moths.
• Light-colored moths began to die due to overpopulation.
• Light-colored moths were less favored for survival in the new environment.
• Light-colored moths began to turn black because of factory pollution.

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Which term best describes a specially developed characteristic that enables an organism to live in a specific environment?

• adaptations
• natural selection
• survival of the fittest
• variations

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What role does genetic variation play in the evolution of species?

• It reduces the chance that species will possess characteristics well-suited for a changing environment.
• It increases the chance that species will possess characteristics well-suited for a changing environment.
• It allows multicellular organisms to change their traits during their lifetimes.
• It allows unicellular organisms to change their DNA after they die.

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Polar bears have a thick coat with hollow hair. How does this feature help them survive in the Arctic region?

• It helps the animal store body fat.
• It helps the animal locate its prey.
• It traps air that keeps the animal warm.
• It controls water loss from the animal's skin.

The diagram shows the top view of the leaves of a plant. This leaf arrangement is common to plants found in dense forests.What is the benefit of this type of leaf arrangement?

• It helps the plant absorb more sunlight
• It enables the plant to store more water.
• It prevents animals from feeding on its leaves.
• It allows the plant to grow larger-sized leaves.

Genes are located in which part of the cell?

• Vacuole

• Chromosome

• Ribosome

• Cytoplasm

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