Download B 263, F 2006

Name
BIOLOGY 263, FALL 2006 – RU 01 TUES AM
FINAL EXAMINATION
Date:
Laboratory Practical Stations. (71%, 2% per answer; 180 points, 5 points per answer)
1. a.
10. a.
b.
b.
2. a.
11. a.
b.
b.
3. a.
12. a.
b.
b.
4. a.
13. a.
b.
b.
5. a.
14. a.
b.
b.
6. a.
15. a.
b.
b.
7. a.
16. a.
b.
b.
8. a.
17. a.
b.
b.
9. a.
18. a.
b.
b.
Definitions. Define each BIOLOGICAL term from THIS LABORATORY in an accurate,
concise, and lucid manner. (7.2%, 2.4% each; 18 points, 6 points each)
1. Bacterial Colony:
2. Electrophoresis:
3. Negative Control Group:
Hypothesis Evaluation. Is there statistically significant support for each of the following
hypotheses? (6%, 2% each; 15 points, 5 points each)
1. Hypothesis = The species richness of bacteria is greater in fertilized lawns than in unfertilized lawns.
Data = Mean number of species on a Petri plate spread with 0.25 ml of a 1:100 unfertilized lawn soil
dilution = 5.5, Mean number of colonies on a Petri plate spread with 0.25 ml of a 1:100 fertilized
lawn soil dilution = 2.3,
p value = 0.012
Circle one: Hypothesis Supported
Hypothesis NOT Supported
2. Hypothesis = The density of bacteria is greater in fertilized lawns than in unfertilized lawns.
Data = Mean number of colonies on a Petri plate spread with 0.25 ml of a 1:100 unfertilized lawn soil
dilution = 16.7, Mean number of colonies on a Petri plate spread with 0.25 ml of a 1:100 fertilized
lawn soil dilution = 19.3,
p value = 0.064
Circle one: Hypothesis Supported Hypothesis NOT Supported
3. Hypothesis = Plant species richness is higher at higher altitudes.
Data = Mean number species of plants around Denver = 27.5, Mean number species of plants around
the Eisenhower tunnel (higher in elevation) = 23.1,
p value = 0.001
Circle one: Hypothesis Supported Hypothesis NOT Supported
Data Analysis and Interpretation.
Given the following data from a small, reproductively isolated, constant-sized population,
a) calculate the allele frequencies for every time period. (4%, 0.4% each frequency; 10 points,
1 points each frequency)
b) Create a properly labeled graph of the allele frequency of one of the alleles (NOT both)
over time. (4.8%, 12 points)
c) Is the population at Hardy Weinberg equilibrium at time 0? (show calcs.) (4%, 10 points)
d) Propose a plausible evolutionary explanation for what you observed based on a)-c)? (2%, 5
points)
generations
0
5
10
15
20
individuals
BB
16
35
77
87
92
Bb
48
57
20
11
8
bb
36
5
3
2
0