help with genetics 3. Based on your graphs, what is the general trend for the A

Question

help with genetics 3. Based on your graphs, what is the general trend for the A and S allele over 3 generations? 4. What are the specific selective forces at work in this simulation? What do you think will 5. Since few people with sickle cell anemia (SS) are likely to survive to have children of 6. Why is the frequency of the sickle cell allele so much lower in the United States than in What type of selection does the trend suggest? happen to the allele frequencies after 10 generations? their own, why hasn't the S allele been eliminated from the population? Africa? What impact might a vaccine against malaria have on the frequency of the Sickle Cell allele in Africa in the long run? 7. There is evidence to suggest that heterozygotes might have an advantage during a malarial infection. Some think this may be due to the increased pressure on cells to sickle during infection. Describe how the sickled cells might allow the infection to be managed. You may use the Internet as a source, but be sure to cite your sou plagiarize. rce and do not What is an allele frequency and how does it relate to evolution? allele frequencies change your view of evolution? Does evolution occur directionality? Explain in relation to this experiment. Does understanding with a single 8. q = 0.25. The 0.25. The heterozygote has a selective advantage and therefore a fitness of W2-1. Assume the homozy gotes have a fitness of W11-0.4 and W22 -0.1, respect frequencies after two rounds of selection. How do these calculations com you collected and the fitness values of the experiment? 9. The allele frequencies of the parents in our simulation were p- 0.75 and - tively. Calculate the allele pare to the data

Explanation / Answer

1. The Sickle cell allele increases with increase in the generation whereas the normal allele decrease with the generation. It is a disruptive selection.

2. Alllele frequencies changes with the selective forces like food, diseases etc. Here the selective force is disease. the allele frequency remains the same after 10 generations.

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