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APA
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Social Sciences
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Lab Report
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English (U.S.)
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Topic:

Forces of Evolution and Natural Selection

Lab Report Instructions:

Exercise 1: Forces of evolution
WATCH: https://www.youtube.com/watch?v=GLxSl-K7Fgg 
Questions1. Name and define the smallest unit of evolution.
1. In your own words, define “genotype frequency”.
2.  If all the homozygous dominant (BB; both alleles dominant) individuals in this picture became heterozygotes (Bb; one allele dominant one recessive) what would be the new allele frequencies? (Give both B and b frequencies)
3. What are the two types of genetic drift given in the video?
Exercise 2: Natural SelectionGo to the Natural Selection Simulation on Biology SimulationsExperimental Question: How does the environment affect the survival of these organisms?Procedure:1. Click on “Introduction” to read about the simulation.
2. Choose one of the environments to start the stimulation:

a.       Desert Sandb.       Mountain Rockc.       Grassland 

3. Run the simulation 3 times for the chosen environment (desert/mountain/grassland) and record your data. 

4. Calculate and record averages for your data. 

5. Complete the analysis.Data:Desert Sand Environment/ Mountain Rock Environment/ Grassland EnvironmentTrial Starting % Gray Starting % Brown Ending % Gray Ending % Brown1  2  3  Average   

Analysis:Describe and explain the results from your simulated environment. 

Lab Report Sample Content Preview:
Name________________________ Date________
Section_______________________ Lab 4 – Forces of Evolution
Exercise 1: Forces of evolution
WATCH: /watch?v=GLxSl-K7Fgg
Questions
1 Name and define the smallest unit of evolution.
The smallest unit of evolution is the gene. It is a unit of hereditary information composed of a sequence of nucleotides within a DNA or RNA molecule that can be passed from one generation to the next. Genes determine the characteristics of an organism by coding for specific proteins.
1 In your own words, define “genotype frequency”.
2
If all the homozygous dominant (BB; both alleles dominant) individuals in this picture became heterozygotes (Bb; one allele dominant one recessive) what would be the new allele frequencies? (Give both B and b frequencies)
The new frequencies of B would be 6/14, and b would be 8/14. Hence, B= 42.9% while b=57.1%
3 What are the two types of genetic drift given in the video?
The two types of genetic drift mentioned in the video are the bottleneck and founder effects.
Exercise 2: Natural Selection
Go to the Natural Selection Simulation on Biology Simulations
Experimental Question: How does the environment affect the survival of these organisms?
Procedure:
1 Click...
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