Figure 19-24 Diagrams One of Mendel's Experiments Using the Round

question 26

Multiple Choice

Figure 19-24 diagrams one of Mendel's experiments using the round and wrinkled seed traits. Figure 19-24
Which of the following statements about the experiment diagrammed in Figure 19-28 is TRUE?

• A)If you crossed all the round-seeded pea plants from the F₂ generation with true-breeding wrinkle-seeded pea plants, you would get more round-seeded pea plants in the next generation than if you crossed all the round-seeded pea plants from the F₁ generation with true-breeding wrinkle-seeded pea plants.
• B)The reason you do not see wrinkle-seeded pea plants in the F₁ generation is because the round-seeded pea plants used to create the F₁ generation were not true-breeding strains.
• C)The gene for round-seeded pea plants is on a different chromosome from the gene for wrinkle-seeded pea plants, which is why you get 25% wrinkle-seeded pea plants in the F₂ generation.
• D)If you crossed the round-seeded pea plants from the F₂ generation with the wrinkle-seeded pea plants from the F₂ generation, you should get 100% round-seeded pea plants.

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Definitions:

Promoter

A region of DNA that initiates transcription of a particular gene, acting as a binding site for RNA polymerase.

Regulation of Transcription

The control of the rate and manner at which transcription of genetic information from DNA to messenger RNA occurs, influencing gene expression.

mRNA Processing

The series of transformations that a precursor messenger RNA undergoes to become mature mRNA, including splicing, capping, and polyadenylation.

Nuclear Pores

Structures in the nuclear envelope that allow passage of certain materials between the cell nucleus and the cytoplasm.