1. You found a new species of garden pea and have decided to repeat Mendel\'s ex

Question

1. You found a new species of garden pea and have decided to repeat Mendel's experiments. You have obtained two true-breeding pea plants that are tall (T) with yellow pods (g), and short (t) with green pods (G), respectively. Capital letters indicate dominant traits. a. What is the genotype and phenotype of the F1 generation? (2p) The genotype and Phenotype of the F1 generation will be Tall and Green pods because they are dominant. b. You allowed self-fertilization in F1 generation and obtained F2 generation. Using Punnett square to obtain the phenotypes, genotypes and their respective ratios. (4p)

2. If you obtained 1248 offspring in the F2generation in Question 1, calculate how many offspring of each phenotypic class you would expect to have. (4p)

3. When you finish question 2, what assumption/hypothesis did you make? What kind of alternative assumption/hypothesis can you make and what kind of offspring and in what numbers do you expect to obtain with the alternative hypothesis? (4p)

4. You only need to answer A or B to get this 6p. Please indicate which question you are answering. In your experiment, you found the following offspring only: Tall green: 626 offspring. Tall yellow: 313 offspring. Short green: 309 offspring. A: If you stay with your original hypothesis/assumption, test it using chi2 test and analyze the result (whether you want to reject the hypothesis and why). B: If you believe that the alternative hypothesis fits better with your data, test it using chi2 test and analyze the result (whether you want to accept the hypothesis and why).

I need help with 3 and 4, please!!

Explanation / Answer

3. The hypothesis is the cross follows the law of independent assortment in which the phenotypic ratio would be 9:3:3:1. The alternate hypothesis is the cross follows the dominant epistasis in which the phenotypic ratio would be 9:3:4.

4. The alternate hypothesis is accepted as this hypothesis fits better. The chi2 test for this hypothesis is 8.22

Which makes the hypothesis to be rejected as it is more than 5%.

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