What is variation?

Variation is the differences between individuals in a population.

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What are the two main causes of variation between individuals?

  1. Genetics - The genes you inherit from your parents are unique to you.
  2. Environmental factors - The environment we experience impacts our characteristics.

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What are the two types of variation?

  1. Continuous variation
  2. Discontinuous variation

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What is continuous variation?

Continuous variation is when a characteristic exists along a full range of differences.

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What is discontinuous variation?

Discontinuous variation is when a characteristic only has specific, distinct options, or groups.

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Is human height an example of continuous or discontinuous variation?

Human height is an example of continuous variation because it ranges from very short to very tall, with every possible height in between.

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Is tongue-rolling an example of continuous or discontinuous variation?

Tongue-rolling is an example of discontinuous variation because you are either able to roll your tongue or you are unable to roll your tongue.

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Is weight an example of continuous or discontinuous variation?

Weight is an example of continuous variation because it exists along a full range of differences.

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Is blood group an example of continuous or discontinuous variation?

Blood group is an example of discontinuous variation because it only has specific, distinct options, or groups.

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