Results. Experiment 1: Monohybrid Cross for Pea Color. Table 1.1: P 1 Cross Results for Pea Color. Parent Descriptions: 1 st Parent: 2 nd Parent:

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1 Results Experiment 1: Monohybrid Cross for Pea Color Table 1.1: P 1 Cross Results for Pea Color Green Peas Yellow Peas Green Peas: Yellow Peas: Table 1.2: F 1 Cross Results for Pea Color: Green Peas Yellow Peas Green Peas: Ratio: (dominant:recessive) Yellow Peas: Table 1.3: Chi-Square Calculations

2 Experiment 2: Monohybrid Cross for Flower Position Table 2.1: P 1 Cross Results for Flower Position Terminal Flowers Axial Flowers Terminal Flowers: Axial Flowers: Table 2.2: F 1 Cross Results for Flower Position: Terminal Flowers Axial Flowers Terminal Flowers: Ratio: (dominant:recessive) Axial Flowers: Table 2.3: Chi-Square Calculations

3 Experiment 3: Dihybrid Cross of Pea Color and Flower Position Table 3.1: P 1 Cross of Pea Color and Flower Position Genotypes of Parents TOTALS: Yellow Green Terminal Axial

4 Table 3.2: F 1 Cross of Pea Color and Flower Position Genotypes of Parents TOTALS: Yellow Green Terminal Axial RATIOS: Yellow:Green Terminal:Axial Di-hybrid Ratios: (Dominant-Dom.:Dom.-Recessive:Rec.-Dom.:Rec.-Rec. Table 3.3: Chi-Square Calculations

5 Experiment 4: Flower Color in Sweet Peas Table 4.1: F 1 Cross of Flower Color in Sweet Peas Red Flowers White Flowers Pink Flowers Red Flowers: White Flowers: Pink Flowers: Table 4.2: F 1 Cross Results for Sweet Pea Flower Color: Red Flowers White Flowers Pink Flowers Red Flowers: White Flowers: Pink Flowers: Ratios: (red:pink:white) Table 4.3: Chi-Square Calculations

6 CONCLUSIONS Experiment 1 1. What pea color is dominant? Recessive? How did you arrive at this conclusion? 2. Using C and c, what are the genotypes of the P 1 and F 1 plants? 3. What ratio of yellow and green peas would you expect in the F 2 generation? 4. By doing a Chi Square analysis on the F 2 data, can you confirm that these plants are a Mendelian F 2 Generation? Show your work. Experiment 2 1. What flower position is dominant? Recessive? How did you arrive at this conclusion? 2. Using P and p, what are the genotypes of the P 1 and F 1 plants? 3. What ratio of axial and terminal flowers would you expect in the F 2 generation? 4. By doing a Chi Square analysis on the F 2 data, can you confirm that these plants are a Mendelian F 2 Generation? Show your work. 5. In the natural setting, the trait that is most common is called the wild-type (dominance) and the rarer type is the mutant. With respect to Mendel s peas, green peas and axial flower position are the wildtypes. By examining your data from Experiments 1 and 2: a. Which allele is dominate (expressed)? b. Which allele is the wild type? c. Do mutations always cause an expressed gene (dominant) to become unexpressed (recessive)? Support your reason with data. Experiment 3 1. Do the genes for pea color and flower position exhibit Independent Assortment? How do you know this? 2. By doing a Chi Square analysis on the F 2 data, can you confirm that these plants are a Mendelian F 2 Generation showing Independent Assortment? Show your work

7 Experiment 4 1. What type of inheritance pattern is being exhibited in this experiment? How do you know this? 2. What are the genotypes of all the phenotypes? 3. By doing a Chi Square analysis on the F 2 data, can you confirm that these plants are an F 2 Generation showing Independent Assortment? (Hint: There are 3 choices for flower color.) Show your work.