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Drosophilla Lab. Lab Hours / Procedure. You are responsible for your flies! Before or after school is your time to work –or- lunch on Monday and Friday Respect each other while you are in the lab. Phenotypes. Description of all 3 fly phenotypes at the start of the project.
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Lab Hours / Procedure • You are responsible for your flies! • Before or after school is your time to work –or- lunch on Monday and Friday • Respect each other while you are in the lab
Phenotypes • Description of all 3 fly phenotypes at the start of the project. • Drawings and labels of the 2 types you use. Ex:
Observations • Vial 1 contains white females and wild males • Vial 2 contains wild females and white males • Every day you will make an observation Ex: Vial I: A good number of flies. Appears to be all wild. Some larvae & pupae. Medium is brown& black and looks repulsive. Vial II: Lots of flies, both wild & white. some larvae & pupae. Medium looks brownish- black and disgusting.
Sexing • What would we say about sexing drosophila?
F1 Cross • If the mutation for white eyes (W) is dominant and wild (+) is recessive, the punnet square would look like? • But!!!!!!! • If the mutation for white eyes (w) is recessive and wild (+) is dominant, the punnet square would look like?
F2 Cross • Using the data from F1 cross determine if your cross is autosomal or sex linked. You know from F1 if it is dominant or recessive. How would you know this? • Make a punnett prediction for the new cross. If it is sex linked use your sex chromosomes! X or Y.
