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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Definitions:

Alleles

Different forms of a gene that arise by mutation and are found at the same place on a chromosome, influencing the development of different traits or characteristics in an organism.

Mendel's Law

Principles established by Gregor Mendel defining the inheritance patterns of traits through generations, including the law of segregation and independent assortment.

Independent Assortment

A principle of genetics stating that genes for different traits are separated into gametes independently of each other during meiosis.

Segregation

The act of separating or setting apart from others; can refer to the separation of substances or to discriminatory practices based on race or other factors.