Week 36 Natural Selection 8th grade

What is variation?

• Variation is the same trait or characteristic in all individuals of a population.
• Variation refers to the process of natural selection.
• Differences or changes in a particular trait or characteristic within a population.
• Variation is only observed in plants, not animals.

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What is distribution in terms of science?

• Distribution in science refers to the organization of scientific conferences
• Distribution in science refers to the spread of a characteristic across a population or sample.
• Distribution in science refers to the packaging of products for sale
• Distribution in science refers to the process of dividing cells in a lab setting

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Why did we see an increase in the poison trait for the poisonous newts?

• Natural selection favoring higher toxicity levels as a defense mechanism against predators.
• Climate change affecting the toxicity of the environment
• Genetic mutation causing a decrease in toxicity levels
• Increased availability of non-toxic prey, leading to a shift in diet

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How can a population of organisms be described?

• A population is a group of individuals of different species living in the same area.
• A population is a group of individuals of the same species living in different areas.
• A population is a group of individuals of different species living in different areas.
• A population is a group of individuals of the same species living in the same area.

What do histograms show in terms of population?

• Histograms show the distribution of a population by grouping data into intervals or bins and displaying the frequency of observations within each interval.
• Histograms show the standard deviation of a population by grouping data into intervals or bins.
• Histograms show the maximum value of a population by grouping data into intervals or bins.
• Histograms show the average of a population by grouping data into intervals or bins.

What makes the distribution of traits in a population change?

• Weather patterns
• Social media trends
• Political ideologies
• Factors such as natural selection, genetic drift, gene flow, and mutations.

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How can a population be described in terms of traits?

• traits present and by the number of individuals who have each trait

• nothing

• fur and number of organisms

• you can use a histogram

What becomes more present in a population over time?

• organisms

• non adaptive traits

• adaptive traits

• natural selection

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Whether or not a trait is adaptive depends on what?

• its size
• its color
• the environment

• its age

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What is an example of an adaptive trait?

• Ability to fly of a giraffe
• Short neck of a giraffe
• Long neck of a giraffe
• Blue color of a giraffe

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