2. An investigator is following segregation of two different traits in a plant model system, Arabidopsis thaliania. The two traits are plant height (H (wild-type); h (short)) and flowering (F (wild-type); f (extra flowers). This investigator first crosses a true-breeding short plant with a true breeding plant with extra flowers. The F1 progeny were all wild type. To then test whether the two traits are caused by two unlinked genes, he crossed two F1 plants. The results are shown in the table below: Phenotype Wild type (normal height and flowering) Normal height, extra flowers Short, normal flowering Short and extra flowers # progeny 245 48 77 9 Analyze the results using the chi-square test to determine whether the data fit the hypothesis that plan height and flowering are determined by two independently segregating genes. Your work supporting your conclusion must be shown for full credit.

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### Analysis of Plant Trait Segregation

An investigator is studying the segregation of two traits in the plant model system *Arabidopsis thaliana*. The traits in question are:

- **Plant Height**: 
  - H (wild-type) 
  - h (short)
- **Flowering**:
  - F (wild-type) 
  - f (extra flowers)

**Experiment Setup:**

1. A true-breeding short plant is crossed with a true-breeding plant that has extra flowers.
2. The F1 progeny exhibited all wild type traits.
3. The F1 plants were then crossed, and the F2 progeny were analyzed for trait segregation.

**Results:**

The F2 progeny distribution is shown in the table below:

| Phenotype                  | # progeny |
|----------------------------|-----------|
| Wild type (normal height and flowering) | 245       |
| Normal height, extra flowers            | 48        |
| Short, normal flowering                 | 77        |
| Short and extra flowers                 | 9         |

**Objective:**

Use the chi-square test to analyze these results. The goal is to determine if the data align with the hypothesis that plant height and flowering are controlled by two independently segregating genes. Detailed work supporting your conclusion is necessary for full credit.
Transcribed Image Text:### Analysis of Plant Trait Segregation An investigator is studying the segregation of two traits in the plant model system *Arabidopsis thaliana*. The traits in question are: - **Plant Height**: - H (wild-type) - h (short) - **Flowering**: - F (wild-type) - f (extra flowers) **Experiment Setup:** 1. A true-breeding short plant is crossed with a true-breeding plant that has extra flowers. 2. The F1 progeny exhibited all wild type traits. 3. The F1 plants were then crossed, and the F2 progeny were analyzed for trait segregation. **Results:** The F2 progeny distribution is shown in the table below: | Phenotype | # progeny | |----------------------------|-----------| | Wild type (normal height and flowering) | 245 | | Normal height, extra flowers | 48 | | Short, normal flowering | 77 | | Short and extra flowers | 9 | **Objective:** Use the chi-square test to analyze these results. The goal is to determine if the data align with the hypothesis that plant height and flowering are controlled by two independently segregating genes. Detailed work supporting your conclusion is necessary for full credit.
Expert Solution
Step 1

Hybridization is crossing two plants of different species to make a new variety. The new plant which is produced is known as hybrid which owns superior characters of both parent plants.

A chi-square test is a statistical test used to compare observed results with expected results. The purpose of this test is to determine if a difference between observed data and expected data is due to chance, or if it is due to a relationship between the variables you are studying.

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