What is the purpose of the fruit fly lab?
Introduction. The purpose of our fruit fly experiment was to learn about genetics which is the study of DNA, genes and traits. We also studied mutations, which are the changing of an organism’s genes and DNA sequence which makes the organism different than that of its species, and the effects of it on our flies.
Why must fruit flies be virgins?
Virgin flies are needed to make sure that that the crosses are being appropriately made with the females using the desired sperms to fertilize their eggs. Female Drosophila are considered virgin eight to ten hours after they hatch from their pupa because during that time they are not receptive to male companionship and …
What is the fruit fly study?
These features, together with a brief generation time, low maintenance costs, and the availability of powerful genetic tools, allow the fruit fly to be eligible to study complex pathways relevant in biomedical research, including cancer.
What is the importance of using fruit flies in genetics?
Fruit flies have a very simple genetic structure, which makes them ideal for genetic research. It is useful to study mutant fruit flies, as their quick reproduction rate allows scientists to observe the advantages and disadvantages of certain mutations.
How can you tell if a fruit fly is male or female?
The most simple characteristic to use to differentiate the two is to look at the genitalia of the flies. Males have dark, rounded genitalia at the tip of their abdomen, whereas females have light, pointed genitalia.
Why are female fruit flies bigger?
Drosophila females are larger than males. In this article, we describe how X-chromosome dosage drives sexual dimorphism of body size through two means: first, through unbalanced expression of a key X-linked growth-regulating gene, and second, through female-specific activation of the sex-determination pathway.
What chromosomes do fruit flies have?
Fruit fly somatic cells have eight chromosomes.
How many haploid chromosomes do fruit flies have?
4
For fruit fly gametes, the haploid number is 4, which can be written as N = 4. What is Meiosis? Meiosis is a process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
How many chromosomes do fruit flies?
eight chromosomes
These body (somatic) cells undergo mitosis. Fruit fly somatic cells have eight chromosomes.
What is fruit fly lifespan?
An adult female fruit fly can lay up to 2,000 eggs on the surface of anything that’s moist and rotting. Within 30 hours, tiny maggots hatch and start to eat the decayed food. Within 2 days, they’re all grown up and ready to mate, too. While that transition may seem quick, a fruit fly only lives 8 to 15 days.
How can you tell the difference between a male and female fruit fly?
The key difference between male and female Drosophila melanogaster is that male organism has a short abdomen with fewer stripes while the female organism has a long abdomen with more stripes. The male and female Drosophila melanogaster are important organisms used in most genetic studies.
What is the name of the lab report for fruit fly?
Fruit Fly Genetics lab report. 1. Jessica Olivares 11/22/2014 Bio 3103 Fly lab report Fruit Fly Report Hypothesis In setting up the fruit fly experiment the predicted mutant phenotypes were to be compared in the observed F1 generation and F2 generation.
What kind of eyes do fruit flies have?
Wild type, white eyes, vestigial, and vestigial and white eyes were counted for each male and each female fruit fly at the end the overall total was given. The Following tables are all constructed F2 phenotypic ratios and Chi square analysis of the F2 generation.
Why is Drosophila melanogaster used as a model organism?
A Model Organism: Drosophila melanogaster is used in this lab as well as many other wet-lab experiments, particularly genetic experiments, because it meets all the criteria in order to be a model organism. Fruit flies are chosen as they meet all the criteria.
How to anesthetize flies in Drosophila culture?
To anesthetize flies we obtained empty vial with foam stopper and added 2 drops of fly nap to the inside of the foam stopper. Then we placed the foam stopper in vial. We then transferred the flies in the empty vial, we removed the stopper/ vial and then gently tapped the bottom of the Drosophila culture.