Hydrangea Plants of the Same Genotype Are Planted in a Large

question 50

Multiple Choice

Hydrangea plants of the same genotype are planted in a large flower garden. Some of the plants produce blue flowers and others pink flowers. This can be best explained by which of the following?

• A) The knowledge that multiple alleles are involved.
• B) The allele for blue hydrangea is completely dominant over the allele for pink hydrangea.
• C) The alleles are codominant.
• D) Environmental factors such as soil pH affect the phenotype.

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