Lab Report 6 - Hardy-Weinberg Abstract Knowing that evolution is a change in the frequency of alleles in a population over a period of time, the Hardy-Weinberg equilibrium was tested Lapiana, In populations where negative phenotypes are carried, the frequency of that allele rapidly decreases. Using beads and random selection over ten generations it was concluded that natural selection removes negative genotypes in a short period of time. We did this using beads, the white beads were the dominant alleles and the red ones were recessive.
On the other hand, working up your own models or having students create their own can be a challenge. The benefits to learning are worth the challenge. This is not presented as the definitive spreadsheet model but rather a rather simplistic model accessible and modifiable by your students.
BTW, it takes longer to read this post than it takes to make this relatively simple spreadsheet. I suggest that you bring up EXCEL or some other spreadsheet in a different window and try to create this worksheet as you follow these instructions.
And when do, they will have an effective tool to explore the basic principles of H-W equilibrium—one that they created. Like other simulations, this first spreadsheet assumes a sexually reproducing species with an infinite gene pool, limited zygotes, random mating, no selection, no mutation, and no migration.
The green zone on this spreadsheet represents the gene pool. If you were to pick an empty cell on the spreadsheet and enter the following function: Try it out and see.
If you have entered the functions correctly in the two cells you should see changing values in the two cells. The zygote is a combination of the two randomly selected gametes.
In spreadsheet vernacular you want to concantenate the values in the two cells: At any rate this function basically says: There you have it. With a model like this you can vary the number of offspring by inserting or deleting rows to investigate the effect the size of the population has on the gene frequencies in the next generation.
Those of you with the AP Biology Lab manual can use this spreadsheet to answer the first few questions in the simulation part of the exercise and it should be pretty easy to modify it to answer others.
Let me know how it works out.Nov 19, · Hardy Weinberg Equilibrium Lab - created at heartoftexashop.com Hardy Weinberg Analysis.
Case 1 Analysis. In your lab book, compare your small population data with your large population. Is it truly in H-W equilibrium? Why or why not? Case 2 Analysis- Natural Selection. In your lab book, compare your data for Natural Selection after 5 generations with your computer model with individuals after 5.
Weinberg equilibrium to analyze genetic drift and effects of selection in the evolution of specific populations (1A3 & SP , SP ). • The student is able to .
Hardy–Weinberg equilibrium is, of course, a mathematical result of embarrassing simplicity, and it would be out of place to dwell here on Hardy's great achievements in pure mathematics, of his long collaboration with J.
E. Littlewood and his support of S. Ramanujan, for which see his Royal Society obituary (T itchmarsh ). Lab 2: PCR of the Alu Insert for Hardy-Weinberg Analysis 3 Part 2: Amplifying the Target Sequence by PCR (Day 1) With our DNA successfully isolate from our cheek cells, we’re ready to begin the PCR.
In this lab we will be modeling Hardy Weinberg’s law of genetic equilibrium. This law proposes that the frequency of alleles and genotypes in a population will remain constant from generation to generation if the population is stable and in genetic equilibrium.