Download presentation
Presentation is loading. Please wait.
Published byΣάπφιρα Παπανδρέου Modified over 6 years ago
1
Drosophila Identification of various phenotypes.
Biology 22 Drosophila Identification of various phenotypes.
2
Outline Brief description of Drosophila phenotypes and life cycle
collection of data related to gender and body color How to study keep your flies still during the identification.
3
Reference for Pictures:
Carolina Drosophila melanogster Manual ( ) Published: Carolina Biological Supply Company Based on research of Dr. Thomas Hunt Morgan
5
The life Cycle
6
Life Cycle: Drosophila melanogaster
Eggs: contain filaments 2 molting phases “instars” Life cycle is 10 days
7
Fruity Fly Egg and Larva
8
Fruit Fly Pupa and Adult
9
1- EXPERIMENT: Identification of:
Gender Body Color
10
Wild Type Versus Mutants
Body Color Wild type: Beige Mutant: Yellow body
11
Parental phenotypes Experiment: body color
A= female: wt (beige) B=female: wt (beige) C=male: wt (beige) D=female: mutant (yellow) E=male: mutant (yellow)
12
Fruit Fly Body Color
13
Sex combs: Male Drosophila
14
Female and Male Fruit Flies
15
Abdominal segements 7 segments to female abdominal segments
5 segments to male abdominal segments Male body size is smaller than female But the “last” abdominal segment is larger in male
17
Nap Time Triethylamine
18
How to anesthetize a fly
19
How to use the Napper
20
View the Fruit Fly
21
You will record class data
After counting the crosses record the data on the class spreadsheet
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.