NATURAL SELECTION & EVOLUTION Natural Selection #14

When lions prey on a herd of antelopes, some antelopes are killed and some escape. Which part of Darwin’s concept of natural selection might be used to describe this situation?

• reproductive isolation
• descent with modification
• acquired characteristics
• survival of the fittest

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In a particular population, sexual reproduction can produce

• many different phenotypes.
• meiosis.
• mutations.

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A population of peppered moths with a dark grey variation and a light grey variation lives in light colored birch forest. It is hunted by sight. Which statement is most likely true?

• there are equal number of light and dark grey peppered moths in the population
• more light grey moths survive than dark grey moths
• more dark grey moths survive than light grey moths
• all peppered moths will be eaten before they can reproduce

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According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have

• characteristics their parents acquired by use and disuse.
• the greatest number of offspring.
• characteristics that plant and animal breeders value.
• variations best suited to the environment.

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If a rabbit species lives in an extremely cold environment with their main predator hunting at night and by sound, which mutation would be most favorable to the rabbit?

• camouflage fur
• a dense undercoat of fur underneath
• bigger ears
• being more visibly active at night

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Which statement is true about evolution?

• Individual organisms can evolve during a single lifespan.
• Darwin and Wallace both came up with the idea that species can transform into different species over time
• Humans evolved from chimpanzees
• Only the strongest survive

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Natural selection and evolution work on what level of life organization?

• individuals
• biomes
• populations
• ecosystems

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Organisms with traits that are favorable to their survival and reproduction are ________ likely to pass on their genes to the next generation, and thus ________ common in the population

• more, less
• more, more
• less, less
• less, more

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For natural selection to impact evolution, which condition is not required?

• selection pressures
• inheritance of traits
• genetic variation within a population
• each population occupies its own niche

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Comparing two individuals of a species, evolutionary “fitness” would be best measured by which of the following?

• the length and width of the individuals
• the number of offspring
• the mass of the food eaten in its life
• the mass of the individuals

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