Fruit Fly Genetics
Title: Fruit Fly Genetics
Purpose: To collect authentic data to determine dominant and recessive traits in fruit flies. To determine parent genotypes from F1 generation.
Learning Goals:
1. Living organisms inherit traits in patterns.
2. Patterns can be predicted.
Vocabulary:
1. Dominant
2. Recessive
3. Gene
4. Allele
5. Genotype
6. Phenotype
7. Punnet square
8. Traits
9. Genetics
10. Gregor Mendel
11. P1, F1, F2
Hypothesis: If I put 2 F1 generation dumpy winged fruit flies with 2 F1 generation sepia eyed fruit flies in a container, then I can determine what P1 generations crossed by comparing the dominant and recessive traits of the F2 generation as well as the ratio of genotypes.
Procedure:
Data: Observations
Day one
- Students prepared fruit fly medium and fruit fly containers.
- Flies were anestisized and 2 dumpy winged and 2 sepia eyed were placed in the container.
- Flies were left to wake up and cross for 10 days.
Day ten, (Tuesday)and eleven (Wednesday)
Fruit Flies |
Qualitative |
Quantitative |
Mrs. Murphy 1st hour
Group: 1
|
small,big wings,red eyes,quick |
three f1 live
2 f2 hatching
|
Mrs. Murphy 2nd hour
Group:2
|
|
|
Mrs. Murphy 3rd hour
Group: 3
|
Two fruit flys with red eyes and two with balck eyes. |
2 Dumpy winged fruit flys and 2 sepia eyed fruit flys. |
Mrs. Ebert 4th hour
Group:
D K
|
1 fruit fly had red eyes and 1 had black eyes. |
3 live f1
13 live f2
|
Mrs. Ebert 6th hour
Group: VS
|
The larve is white with a yellow tint
|
Live F1=1 |
Mrs. Ebert 7th hour
Group: AJ
|
No signs of life yet. |
Live F1= 6 |
Mrs. Ebert's 7th hour
Group: MR
|
|
|
Day 12
-
Fruit Flies |
Qualitative |
Quantitative |
Mrs. Murphy 1st
Group:
|
larva squirming,1 burrows, |
1 f1 left
5 f2 Alive
|
Mrs. Murphy 2nd
Group:
|
|
|
Mrs. Murphy 3rd hr.
Group:
|
The larva is small yellowish white, move slow. |
25+ larva |
Mrs. Ebert 4th hr.
Group:DK
|
|
13+ larva |
Mrs. Ebert 6th hr
Group:V.S.
|
Flys are brown with a small set of wings. Most of the larvae are all over the walls of the tube. They are turning a darker brown. |
F2=2 |
Mrs. Ebert 7th hr.
Group:JA
|
Lots of trails. A couple of noticable larva. The larva is almost clear.
|
5+ Larva |
Day 16
-
Observations
Mrs. Murphy |
Qualitative |
Quantitative |
Mrs. Murphy's 1st. hour Group:
AB
|
dry
Smells
|
over 50 paupa
no F2's but F3's are turning into paupa's
|
Mrs. Murphy's 2nd hhour Group: |
|
|
Mrs. Murphy's 3rd Hour Group: |
Mostly Black eyed fruit flys, long wings, and tan and black bodys |
40+ fruit flys
|
Mrs. Ebert's 4th hour
Group:
DK
|
|
|
Mrs. Ebert's 6th hour
Group:SV
|
pupae are really dark.
|
F2=2 |
Mrs. Ebert's 7th hour
Group:JA
|
flies are light brown, the pupae are dark brownish and the larva are white. |
40 flies+
80 pupae+
5 larva+
|
Data
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1st Hour
AB
third day tube is filled with paupa
The food is getting dry and the paupa's are starting to mature into adult fruit flies.
Their are many paupas and i dont think thier is enough room for them all when they hatch. The paupa are starting to climb the walls and the larvae are burrowing and and staying to hatch into a juevinialle friut flies.
I also learned that the fruit flies reproduce very fast from the p1 generation.
We had 1 dumpy winged fruit fly and 1 not dumpy winged fruit fly! They were both Sepia flys!
2nd Hour
TK
12/12
- When we went outside to let our fruit fly parents out of the cage some kids were messing around and nocked our babie fruit flies out of the tube. We asked them to not step on are babies but they did eneyway. And now we don't have are own babies we got new ones though.
The new ones are starting to change color. And they are starting to move. All the ones that are in the blue food are moving around and there is one coming up from eating.
12/19
one of the babby fruit flies has hatch anad is up and fliying around and eating healthy like an adult. The fruit fly has long clear wings, he is brounish/tanish, and is a vaery good sized fly. All the other babby flys has not hatched yet but are squirming around and eating healthy.
1/9/08
All of our babies hached and were pretty healthy. In the group of all 193 babby fruit flys we had 2 albino babbys and 26 with red eyes and 165 with sepia eyes. WE also have 2 that are dumpy with red eyes and 0 that are dumpy with sepia eyes.
3rd Hour - KJ
12/12
- We let the f1 family out and the f2 larva are left.
12/14
- The larva are starting to change colors, and starting to move faster and almost ready to hatch.
- 12/19 Most of the f2 larva hatched and there are about 40 fruit flys alive and still more larva!
4th hour - DK
12/12
There were 3 fly's F1 and we let them go and now there are none. We have 13 f2 larva left in the tube after we let the parents go. Only 2 of the 13 larva were moving.
12/14
There are only 13 f2 lava in the tube. There color is white and they have started to chage to a darker color. They are starting to move around. Now 1/4 of the larva are moving.
12/19
We gave our larva more food and water so they can survive over christmas break.
6th hour
VS lab
We have two flies and many pupae on the wall
The larvae that are left are moving and eating fast.
Around 18 F2 pupae that are predicted to hatch over the weekend.
The pupae are close to hatching.
They look are a dark brown. The larvae are close to becoming a pupae.
We think that some of the pupae might not survive over the Christmas Break, becouse of the position they are in.
None of the pupae have hatched since our last observation but most of the larvae has become pupae.
JCs Lab-Purebred Dumpywing
We have two flies and no pupae.
Light brown and red.
Flies are less energetic. Not flying as much.
Chestnut colored eyes.
We now have only one fly. One has died.
The fly flies around; more energetic.
Eats a lot of food.
Not alot of flies were born. We only saw two alive. I thought there would be more.
If there were more, when would they breed? Would they also be dumpywing?
Will the flies grow even more different?
7th Hour
JAs lab
We expect to learn how generations change over time, or through out offspring.
We have already learned that some times the parents are all female or male so they can't reproduce.
We have just learned that flies don't reproduce all at the same time.
We have learned that it takes awhile for the fies to change from egg to larva to pupae to fly.
12/19
We lost our bottle so Ms. Ebert gave us her's.
There are many flies. They are brown. Some darker then other.
There are many larva. They are almost ready to hatch. The larva some are yellowish brown and some are whiteish yellow.
The food had dried so we put just a couple of drops of water in the food so that they live pass the Christmas break.
1/4/08
Today we opened the container and counted all the dumpy and non-dumpy and then the not sepia and sepia.
We had 39 flies.
We had to kill them after we counted them.
7th Hour
MRs lab
We expect to learn how generations change through mating different phenotypes.
Comments (1)
Anonymous said
at 11:24 pm on Dec 15, 2007
The students are awesome! I really believe you are learning the basics of genetics. Great Job, keep it up!
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