Causes of Variation in Multicellular Organisms

List at least one cause of variation in multicellular organisms.

Define meiosis

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Define mutation(s)

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Define environmental factor(s)

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Define gene flow

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In your own words, explain how meiosis can cause variation in organisms.

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How can meiosis lead to variation?

• Meiosis eliminates genetic variation completely.
• Meiosis only occurs in somatic cells.
• Meiosis results in identical daughter cells.
• Meiosis involves crossing over and independent assortment.

In your own words, explain how mutations can introduce variation.

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How can mutations lead to genetic variation?

• Mutations only occur in non-inheritable traits.
• Mutations decrease the overall genetic diversity.
• Mutations have no effect on genetic variation.
• Mutations alter DNA sequences, which can be inherited.

In your own words, explain how the environment can lead to variation.

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