Biology: Life on Earth

Chapter 12: Patterns of Inheritance

Essay Challenge

1. Describe how Mendel's initial cross-breeding and back-cross experiments helped to prove that genes are the component active in inherited traits. [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

2. Explain why Mendel's findings about flower color in peas do not explain all types of genetic trait inheritance. [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

3. Why are Drosophila melanogaster used so frequently in genetics exercises? [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

4. Describe how incomplete dominance (as in snapdragons) is different from complete dominance (as in peas). [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

5. Explain some reasons why polygenic inheritance provides a clearer explanation for human eye color than does single-gene inheritance. [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

6. Explain how the genetic disorders Turner syndrome, Trisomy X, Klinefelter syndrome, and XYY males are related. [Hint]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

 




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