27 Jun Natural Selection:Hardy-Weinberg Hands-On Labs, Inc. Version 42-0100-00-01
Question
Natural Selection:Hardy-Weinberg
Hands-On Labs, Inc. Version 42-0100-00-01
Lab Report Assistant Thisdocumentisnotmeanttobeasubstitute foraformallaboratoryreport.TheLabReport Assistantissimplyasummaryoftheexperiment’squestions,diagramsifneeded,anddatatables that shouldbeaddressedinaformallabreport. Theintentistofacilitatestudent’swriting oflab reports by providing this informationin an editable filewhich can be sent to an instructor
Exercise 1: A Populationin Hardy-Weinberg
Equilibrium
.gif”>Observations
Data Table 1: Twelve generationsof data for the hypotheticalfox population
Number of
Alleles
Frequency of
Alleles Frequency of Genotypes Number of Genotypes
Generation B b B b BB Bb bb BB Bb bb
Starting
(Parental) 50 50 0.50 0.50 0 1.00 0 0 50 0
Expected
for all
subsequent
generations
1
2
3
4
5
6
7
8
9
10
11
12
Average
Graph your data below:
Exercise 1: Questions
A. WereyourexpectedestimatesbasedontheHardy-Weinbergprinciple similartothedata observed in this exercise?
B. What factors may disturb a populationin Hardy-Weinberg equilibrium?
C. Do you think the Hardy-Weinberg principle normally occurs in nature? Explain your answer.
Exercise 2: The Effect of Natural Selection on a
Population
Observations
Data Table 2: Twelve generationsof data on a populationwith natural selection.
# of
Alleles
Frequency of Alleles
Frequency of Genotypes
Number of Genotypes
Did Not
Reproduce
Generation
B
b
B
b
BB
Bb
bb
BB
Bb
bb
Starting
(Parental)
50
50
0.50
0.50
Expected
0.00
1.00
0.00
Expected
0
50
0
0
Actual
0.00
1.00
0.00
Actual
0
50
0
1
Expected
Expected
Actual
Actual
2
Expected
Expected
Actual
Actual
3
Expected
Expected
Actual
Actual
4
Expected
Expected
Actual
Actual
5
Expected
Expected
Actual
Actual
6
Expected
Expected
Actual
Actual
7
Expected
Expected
Actual
Actual
8
Expected
Expected
Actual
Actual
9
Expected
Expected
Actual
Actual
10
Expected
Expected
Actual
Actual
11
Expected
Expected
Actual
Actual
12
Expected
Expected
Actual
Actual
State your Hypothesis:
Graphyourdatabelow:Forthefirstgraph,labelthex-axiswiththenumber ofgenerations and the y-axis withfrequency of alleles.For the secondgraph, labelthe x-axiswiththe numberofgenerationsandthey-axiswithfrequency ofgenotypes.Includethegraphsin yourlabreport. Makesuretoclearly differentiate differentalleles andgenotypesfrom each other on each graph.
Exercise 2: Questions
A. Was your hypothesis supported in this experiment? Explain your answer.
B. What was the purpose of this exercise? Explain your answer.
C. How was the graph created in this Exercise differentfrom the one you created in Exercise 1?
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