Data Page

Prelab Questions (read main page)

1. Why are fruit flies a good subject for genetic studies?

 

2. Describe the life cycle of Drosophila melanogaster

 

3. What tools would you need to study fruit flies in the lab?

 

4. Show the abbreviations that would be used to denote a fly with dumpy (dp) wings and a wild type fly that is carrying the allele for dumpy wings. The allele is not located on the sex chromosome.

 

Sexing Fruit Flies

1. Describe the differences between male fruit flies and female fruit flies.

 

 

2. How many male fruit flies were present in the simulation? ______ How many females? ______

 

Cross 1: Wild Type Female x Vestigial Winged Male

F1 Generation F2 Generation
Wild Type Males
Vestigial Winged Males
Wild Type Females
Vestigial Winged Females

Hypothesis: What is the genotype of the parents and how is vestigial wings inherited (autosomal or sex linked)

 

Chi Square Analysis

 

 

Cross 2: White Eyed Female x Wild Type Male

F1 Generation F2 Generation
Wild Type Males
White eyed Males
Wild Type Females
White Eyed Females

Hypothesis: What is the genotype of the parents and how is eye color inherited (autosomal or sex linked)

 

Chi Square Analysis

 

 

Cross 4: Wild Type Female x Sepia Eyed, Vestigial Winged Male

F1 Generation F2 Generation
Wild Type Males
Wild Type Female

Total Wild Types

Vestigial Winged Males (normal antenna)
Vestigial Winged Females (normal antenna)

Total Vestigial Winged (normal antenna)

Aristapedia Males (normal wings)
Aristapedia Females (normal wings)

Total Aristapedia (normal wings)

Vestigial Wings, Aristapedia Males
Vestigial Wings, Aristapedia Females

Total Vestigial Wings, Aristapedia

Hypothesis: What is the genotype of the parents and how is aristapedia and vestigial wings inherited (autosomal or sex linked)

 

 

Chi Square Analysis