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MMLU / Hydrangea flowers have one gene for flower color. Plants of the same genetic…

Problem

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question

Hydrangea flowers have one gene for flower color. Plants of the same genetic variety have flowers that range in color from blue to pink with the color varying due to the type of soil in which they are grown. Which of the following statement best explains this phenomenon?

choices

  1. The alleles for flower color show incomplete dominance where neither trait is dominant; expression of the genes shows a blending of traits.
  2. The alleles for flower color are codominant; both traits show depending on the environment.
  3. In this case, the environment alters the expression of a trait.
  4. The genes for flower color show polygenic inheritance.

subject

high_school_biology

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