Welcome to the World
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

Welcome to the World of Fruit Fly Genetics PowerPoint PPT Presentation


  • 108 Views
  • Uploaded on
  • Presentation posted in: General

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

Download Presentation

Welcome to the World of Fruit Fly Genetics

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Welcome to the Worldof

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

Genitalia


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.


Here’s a close up of the male genital region.

Notice the metallic sheen of the genitals.


One male and one female

Find their distinguishing features.


Ventral view of a male and female

Find their distinguishing features


Female laying

an egg


Notice the relatively larger size and

lighter pigmentation

of the

virgin female as compared with the

mature female


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.

Anus

This is a third instar larva

prior to pupation

Mouth


Larva to Pupa Stages

Larvae are mobile

Pupal

stages

With the onset of pupation the worm-like larva contracts and a

parchment-like pupa case hardens around the metamorphosing fly.


Fly metamorphosis in pupa

When the fly emerges from the

pupal case the wings are still

wet and folded.


When flies are newly hatched

their wings are still damp

and folded.

Is this a male

or a female?

This is a male.

Pigmentation has not developed.


  • Login