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Two porcupines have different parents. One has thick bristles, while the other has thin bristles.Why do they have different bristle thickness?
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Two porcupines have different parents. One has thick bristles, while the other has thin bristles.Why do they have different bristle thickness?

User Mohammad Niazmand
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1 Answer

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They have different bristles because they have different versions of genes that they inherit from their parents, given that these porcupines have different parents. These genes instruct or determine the thickness of their bristles.

User Maraca
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