Student Name: CJN
constitute only a portion of this total).
There are approximately 10,000 genes in the mammalian genome.
1,000,000,000
2. What proportion (%) of the total genome does this represent?
1 in 90,000
Note: In the following experiments on gene
pool, gene frequency, and genetic diversity; assume there
2.
# of Individuals |
|
% of Population |
Yellow Beads |
Green Beads |
Total |
Yellow Beads |
Green Beads |
Total |
13 |
7 |
20 |
65 |
35 |
100 |
3. What can you say about the genetic variation between these
populations?
Experiment 2: Genetic Drif
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12 |
13 |
25 |
|
42 |
58 |
100 |
|
11 |
14 |
25 |
|
29 |
71 |
100 |
|
15 |
10 |
25 |
|
38 |
62 |
100 |
|
7 |
18 |
25 |
|
73 |
27 |
100 |
|
13 |
12 |
25 |
|
52 |
48 |
100 |
Post-Lab Questions
1. What observations can you make regarding the gene pool and gene
frequency of the surviving
Yes, the do vary between populations. Based on the varying survivors
(from each beaker) I see no obvious pattern(s) showing one population
surviving more consistently than any other. The one thing we can see is
that the size of the parent population and its original gene pool have
the most effect on the variations.
3. What observations can you make about the genetic variation between
the parent and surviving
One observation that I am able to make is that the variation size
continues to grow thereby becoming more unpredictable.
Experiment 3: Stochastic Events
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2 |
3 |
5 |
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40 |
60 |
100 |
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2 |
3 |
5 |
|
40 |
60 |
100 |
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1 |
4 |
5 |
|
20 |
80 |
100 |
|
3 |
2 |
5 |
|
60 |
40 |
100 |
|
4 |
1 |
5 |
|
80 |
20 |
100 |


An observation that I can make is that the founding populations were
roughly equal similarly with the parent populations.
4. Suppose you have a population of 300 butterflies. If the
population experiences a net growth of
24 butterflies survive. What percent does the colony decrease by? The
colony decreases by 84% as there are only 16% remaining.
Experiment 4: Natural Selection
The distribution of phenotypes changed to favor the blue beads with
only a small number of red beads remaining.
4. Is there a selective advantage or disadvantage for the red and/or
blue phenotypes? There is an advantage for the blue beads and a
disadvantage for the red beads.
6. |
Assume that you live in a country with 85 million people that
consistently experiences an
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Ss |
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SS |
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Ss |
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Ss |
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Ss |
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SS |
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Ss |
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SS |
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Ss |
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Ss |
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Ss |
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ss |
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Ss |
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Ss |
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ss |

3. Given enough generations, would you expect one of these alleles to
completely disappear from the
population? Why or why not?
ancestry. How would you explain this?
The reason that both alleles are still present is because the
dominate allele of red protects the blue from dying and the fact that
crossing hetero with homo always results in two homo and two hetero.
