Mechanisms of Evolution

A chemical spill causes the offspring of ladybugs to have blue dots instead of black dots.

• Natural Selection

• Genetic Drift

• Mutation

• Gene Flow

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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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A certain type of plant can produce blue or yellow flowers. During a fire, many yellow flowers are destroyed and now since blue is the dominant trait, the plant reproduces offspring that produce only blue flowers.

• Non-Random Mating

• Gene Flow

• Mutation

• Genetic Drift

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Some organisms of a population of birds are born with extra-long beaks instead of a normal sized beak.

• Gene Flow

• Natural Selection

• Genetic Drift

• Mutation

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NGSS.HS-LS3-2

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Females a certain bird species are attracted to the mating calls of male species more than others

• Genetic Drift

• Mutation

• Non-Random

• Natural Selection

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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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Which of the following is NOT considered a mechanism of evolution?

• Mutations

• Natural Selection

• Behavior Changes

• Genetic Drift

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What occurs when members of one population migrate and interbreed with another population.

• Mutation

• Gene Flow

• Bottle Neck Effect

• Even distribution of traits

What determines an organism's biological fitness?

• How strong it is

• A lack of mutations

• It's lifespan

• The number of offspring it produces

Tags

NGSS.HS-LS4-4

Genetic Drift has a stronger effect on smaller populations

• True

• False