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(a ) Write the Hardy-Weinberg principle....

(a ) Write the Hardy-Weinberg principle.
(b) Explain the three different ways in which natural selection can affect the frequency of a heritable trait in a population shown in the graph given below.

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Natural selection can lead to Stabilization (more individuals acquire mean character individuals value), Directional change (more acquire a value other than the mean character character value) or Disruption (more individuals acquire peripheral character value at both ends of the distribution curve).
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