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Intro Breeding Bunnies lab. W.E. Castle discovered hairless rabbits (ff) in 1933. They would be very useful in a microevolution experiment.

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Presentation on theme: "Intro Breeding Bunnies lab. W.E. Castle discovered hairless rabbits (ff) in 1933. They would be very useful in a microevolution experiment."— Presentation transcript:

1 Intro Breeding Bunnies lab

2 W.E. Castle discovered hairless rabbits (ff) in 1933. They would be very useful in a microevolution experiment.

3 Now if I had 50 bunnies that were carriers for hairless-ness (Ff), I could put them in an isolated meadow in England

4 Letting nature take its course…they would breed like bunnies. Any hairless rabbits (ff) would not survive the cold winter…thus being eliminated from the gene pool.

5 I would record each offspring produced each generation. And, then use that data I could calculate the changes in gene frequency (microevolution) of the F allele and f allele.

6 OK…Now I just need a Grant to pay for the research, convince my parents to let me go on travel study, A passport…. Hum, maybe I could come up with a model experiment

7 Converting the proposed experiment with live animals into an experiment with model animals F f

8 Converting the proposed experiment with live animals into an experiment with model animals F f I could use beans to represent the alleles of each bunny “F” allele “f” allele

9 Converting the proposed experiment with live animals into an experiment with model animals F f

10 Converting the proposed experiment with live animals into an experiment with model animals F f

11 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Put the bunny alleles in the Bag  mating

12 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Put the bunny alleles in the Bag  mating Draw 2 alleles out at a time  bunny born

13 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Put the bunny alleles in the Bag  mating Draw 2 alleles out at a time  bunny born Repeat until bag empty  complete generation

14 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Record Data  calculate gene frequency F & f

15 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Record Data  calculate gene frequency F & f Repeat 8 times  eight generations of bunnies

16 Converting the proposed experiment with live animals into an experiment with model animals Model Meadow Record Data  calculate gene frequency F & f Repeat 8 times  eight generations of bunnies Graph microevolution: change in allele frequency over time

17 So… What would be the research question of this lab?

18 So… What do you predict will happen to the percentage of f (NO fur alleles) in the bunny population over 8 generations? –Why? What do you predict will happen to the percentage of F(fur alleles) in the bunny population over 8 generations? –Why?

19 Write a formal hypothesis: If blah blah blah, then blah blah blah blah


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