Evolution and Genetic Drift

The more genetic variation a population has,

the more likely it is for some individuals to

• evolve

• migrate

• survive

• mutate

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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

• changes in genotype, but not phenotype

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Darwin found the following finches on the Galapagos islands. What best describes why they have different beaks?

• Genetic variation has made it possible for birds to feed on different forms of food due to their beak shape.

• Genetic variation has made it possible for larger eyes on the birds to see.

• Genetic variation has made it possible for the birds to camouflage themselves on the island.

• Genetic has made it possible for the birds to feed at different times of the day due to competition.

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What characteristic does "survival of the fittest" need for survival of a species.

• Genetic Variation

• Speed

• Beak shape

• Biodiversity

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Success of an organism to survive is determined by which characteristic.

• Dominates environment

• Useful to humans

• Surviving harsh conditions

• Passing genes onto offspring

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Cats, dogs, humans, wales, birds and bats all have the same bones in their arms, wings and fins. How do we use this to support the "Theory of Evolution?"

• Evidence they evolved from a common ancestor.

• Evidence they evolved separately from each other.

• Evidence they all evolved on different continents.

• Evidence they all came from the same mom.

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Which characteristic will help a crop to survive a sudden disease.

• Spraying pesticides

• Clone of other similar plants

• Genetic Variation due to genetic engineering

• Genetic modified to grow in sunlight

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Which combination of characteristics in a population would provide the greatest potential for evolutionary change?

• Small population, low mutations rates

• Large population, low mutation rates

• Small population, high mutation rates

• Large population, high mutation rates

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The country of Sweden is known for having people with blonde hair and blue eyes. One day a family moves from Sweden to India where dark hair and dark eyes are very common. A female from Sweden marries a male from India and their offspring now have blonde hair and blue eyed traits.

• Natural Selection

• Mutation

• Non-Random Mating

• Gene Flow

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changes in a gene pool over time

• Evolution

• Gene

• Mutation

• Genetic drift

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