welcome to the world of fruit fly genetics
DESCRIPTION
Welcome to the World of Fruit Fly Genetics. This is a *female* fruit fly Notice the tiger-striped abdomen and the simple tag-like tip on the abdomen. The tip at the end of the female abdomen is the excretory opening. Just proximal to this opening is the female genital opening. Female - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/1.jpg)
Welcome to the World of Fruit Fly Genetics
![Page 2: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/2.jpg)
![Page 3: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/3.jpg)
This is a *female* fruit fly
Notice the tiger-striped abdomen and thesimple tag-like tip on the abdomen.
![Page 4: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/4.jpg)
The tip at the end of the female abdomen is the excretory opening.Just proximal to this opening is the female genital opening.
Female Genitalia
![Page 5: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/5.jpg)
This is a mature male fruit fly
Mature males have a prominent black abdominal end.Males also have tiny “sex combs” on their front pair of legs.
![Page 6: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/6.jpg)
Here’s a close up of the male genital region. Notice the metallic sheen of the genitals.
![Page 7: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/7.jpg)
One male and one female
Find their distinguishing features.
![Page 8: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/8.jpg)
Ventral view of a male and female
Find their distinguishing features
![Page 9: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/9.jpg)
Female laying an egg
![Page 10: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/10.jpg)
Notice the relatively larger size and
lighter pigmentation of the
virgin female as compared with the
mature female
![Page 11: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/11.jpg)
This is a third instar larva prior to pupation Mouth
Anus
Tiny fly eggs hatch into tiny worm-like larvae. The larvae eat
and grow in length and girth. The maximum size
of the larval stage is called
the third instar. This larval stage becomes a pupa.
![Page 12: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/12.jpg)
Larva to Pupa StagesLarvae are mobile
With the onset of pupation the worm-like larva contracts and a parchment-like pupa case hardens around the metamorphosing fly.
Pupalstages
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Fly metamorphosis in pupa
When the fly emerges from the pupal case the wings are still wet and folded.
![Page 14: Welcome to the World of Fruit Fly Genetics](https://reader036.vdocument.in/reader036/viewer/2022062316/568166ef550346895ddb4c1d/html5/thumbnails/14.jpg)
When flies are newly hatchedtheir wings are still damp
and folded.
Is this a male or a female?
This is a male. Pigmentation has not developed.