The Leaf Color of a Certain Plant Is Controlled by One

question 58

Multiple Choice

The leaf color of a certain plant is controlled by one gene.For that gene,the allele G = orange and g = green.You have a plant with orange leaves,but do not know whether that plant's genotype is GG or Gg.Which of the following would help you determine the plant's genotype?

• A) Cross the plant to another plant with orange leaves.
• B) Cross the plant to a plant with green leaves.
• C) Cross two true-breeding, orange-leaved plants to each other and then cross one of their offspring to the plant with the unknown genotype.
• D) Change the environment in which the plant grows to find the conditions that cause the leaves to produce the orange color.

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