Directions: Use the Fruit Fly Genetics model to answer the following questions.

Go to the link Fruit Fly Genetics and review the page.

1. What are the possible phenotypes the simulation lets you test for the mother?

2. What are the possible phenotypes the simulation lets you test for the father?

3. Your goal is to justify which allele is dominant, and which allele is recessive in this simulation. What allele do you think is dominant?

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To understand which allele is dominant, and which allele is recessive it is necessary to cross parents of different phenotypes. Perform the following crosses and record the data in the table format below. Each genetic cross between parents should be run 5 times. Calculate the mean/average of the 5 simulation runs. Hint - to find the average or mean of a set of numbers: first, add all the numbers; then, divide by the total amount of numbers. For example: 1 + 2 + 3 + 4 + 5 = 15. 15 / 5 = 3. Average is 3.

4. Table 1: Wild x Wild

Wild-Type Mother x Wild Type Father	Number of Apterous offspring	Number of Wild-type offspring
Experiment 1
Experiment 2
Experiment 3
Experiment 4
Experiment 5
Mean (average) of trials

5. Table 2: Apterous x Apterous

Apterous Mother x Apterous Father	Number of Apterous offspring	Number of Wild-type offspring
Experiment 1
Experiment 2
Experiment 3
Experiment 4
Experiment 5
Mean (average) of trials

6. Table 3: Wild x Apterous

Wild-Type Mother x Apterous Father	Number of Apterous offspring	Number of Wild-type offspring
Experiment 1
Experiment 2
Experiment 3
Experiment 4
Experiment 5
Mean (average) of trials

7. Table 4: Apterous x Wild

Apterous Mother x Wild-Type Father	Number of Apterous offspring	Number of Wild-type offspring
Experiment 1
Experiment 2
Experiment 3
Experiment 4
Experiment 5
Mean (average) of trials

8. Based on the average offspring, what was the dominant allele? Explain how the data supports your claim.

9. What are the genotypes of the wild-type parents (AA, Aa, or aa)? How does the data support your claim?

10. What are the genotypes of the apterous parents (AA, Aa, or aa)? How does the data support your claim?

11. Why are the results different during different trials in Table 1, even though the conditions were the same (wild-type x wild-type)?

12. Why are the results always the same in Table 2?

13. How is this model similar to other patterns of inheritance? Compare to at least 2 other patterns of inheritance.