8.LS4.3 Study Guide/Review

Which statement best describes the process of evolution?

• Populations can survive in different locations on earth
• Environmental conditions limit the number of species on Earth
• Populations grow when resources are abundant
• The traits of a species can change over time

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Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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Species with ______variation are ______likely to survive.

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

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Which of the following is NOT an example of natural selection? 

• People selectively breeding hamsters.
• Insect populations developing resistance to certain pesticides.
• Bacteria becoming resistant to antibiotics.
• Male birds of certain species developing colorful feathers to attract female mates.

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Which describes the relationship between evolution and natural selection?

• Natural selection is the outcome, evolution is a hypothesis

• Evolution is the outcome, natural selection is the process

• Natural selection is always happening, evolution happens rarely

• Evolution and Natural selection are the same idea just different words

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Briefly explain each of the 4 key principles that

natural selection is based on.

• Variation- is among species and is natural differences or a random in traits

  Adaptation- when someone is suited for their environment

  Overproduction- more of the offsprings produce more that can survive

  Selection- when an adaptation is passed from generation to generation to enable organisms to survive

• Natural selection lead to the development of giraffes with long necks because when there was short neck giraffes they couldn't reach the top of the tree to get food so they would die out and long neck giraffes took over

• The two advantages are you get most of the traits you want and you get a new puppy. Two disadvantages that u get it is some of the traits are negative and the gene pool is less diverse

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Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• Hardey-Weinberg equilibrium within a population

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Which best describes the role of mutations in natural selection?

• Mutations help an organism to better survive in their environment
• An organism may acquire a helpful mutation by interacting with the environment
• A mutation may result in an adaptive trait that makes an organism more likely to survive and reproduce
• Organisms with certain traits are more likely to win competitions for mutations

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The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.
• The acquired traits of a population.
• Hair color and eye color
• Attractive features.

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

• theory of evolution.
• variations.
• survival of the fittest.
• ecosystems.

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